More Than $6 Billion in Cryptocurrency Stolen From Binance in Record Cyber Heist

Study the questions and tasks

Work through the material below, or start the interactive practice above to complete an attempt. Try the exercises before opening any answer or transcript sections, then use them to review your work.

Practice level

C2. Try this level if you can follow the instructions and understand most of the language; choose an earlier level if you need more support.

Question formats

Fill in the blank (dropdown)

How to approach this practice

Read the complete sentence and notice the subject, verb form, time reference and word order before answering.

1. Question 1 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   Only after the investigation progressed ___ the limits of the technical evidence become apparent.

   Choices for blank 1

   1. did
   2. had
   3. were
   4. would
   Check answers and explanations

   Blank 1

   did

   After negative inversion, the auxiliary precedes the subject.

2. Question 2 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   It is imperative that exchanges ___ robust safeguards for digital assets.

   Choices for blank 1

   1. maintain
   2. maintains
   3. maintained
   4. will maintain
   Check answers and explanations

   Blank 1

   maintain

   The mandative subjunctive requires the base form after “it is imperative that.”

3. Question 3 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   Had the attackers been identified earlier, investigators ___ the attribution sooner.

   Choices for blank 1

   1. would establish
   2. would have established
   3. will have established
   4. had established
   Check answers and explanations

   Blank 1

   would have established

   This inverted third conditional requires “would have” plus a past participle.

4. Question 4 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   ___ the reported value fluctuate, the theft would remain exceptionally large.

   Choices for blank 1

   1. Should
   2. Would
   3. Had
   4. Were
   Check answers and explanations

   Blank 1

   Should

   The formal conditional inversion uses “should” followed by the base verb.

5. Question 5 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   The exchange, ___ institutions handle exceptionally valuable digital assets, faces heightened scrutiny.

   Choices for blank 1

   1. where
   2. which
   3. what
   4. whose
   Check answers and explanations

   Blank 1

   where

   The nonrestrictive relative clause requires “where” for an institution or setting.

6. Question 6 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   The evidence was too ambiguous ___ a definitive attribution.

   Choices for blank 1

   1. for supporting
   2. to support
   3. supporting
   4. that it supports
   Check answers and explanations

   Blank 1

   to support

   The construction “too ... to” expresses an insufficient degree for the result.

7. Question 7 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   The investigators insisted on ___ the distinction between suspicion and proof.

   Choices for blank 1

   1. preserve
   2. preserved
   3. preserving
   4. to preserving
   Check answers and explanations

   Blank 1

   preserving

   The preposition “on” requires a gerund or noun phrase.

8. Question 8 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   It was not the scale alone ___ made the incident consequential.

   Choices for blank 1

   1. what
   2. which
   3. that
   4. where
   Check answers and explanations

   Blank 1

   that

   A cleft construction with “not ... alone” takes the relative marker “that.”

What to review next

After checking an answer, explain the rule in your own words and write a new sentence using the same pattern. Revisit any rules you could not explain.

A focused practice result shows how you did on these tasks. Use several activities across skills to decide what to study next; one practice score does not certify an overall CEFR level.