From Floating Saunas to Clinical Trials: How Heat Might Help Mental Health

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

C1. 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.

   The available studies were encouraging enough ___ further investigation.

   Choices for blank 1

   1. warrant
   2. warranting
   3. warranted
   4. to warrant
   Check answers and explanations

   Blank 1

   to warrant

   The adjective phrase “enough to” requires a to-infinitive.

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

   Choose the correct option for each blank.

   Had Hilland found conclusive evidence, she ___ recommendations immediately.

   Choices for blank 1

   1. would have issued
   2. will issue
   3. would issue
   4. issued
   Check answers and explanations

   Blank 1

   would have issued

   This inverted third conditional requires “would have issued.”

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

   Choose the correct option for each blank.

   The trial, ___ by municipal funding, will recruit fifty participants.

   Choices for blank 1

   1. funding
   2. funded
   3. to fund
   4. having fund
   Check answers and explanations

   Blank 1

   funded

   A past participle correctly forms the reduced passive relative clause.

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

   Choose the correct option for each blank.

   Researchers are examining whether sauna sessions ___ psychological benefits.

   Choices for blank 1

   1. offers
   2. offering
   3. offer
   4. to offers
   Check answers and explanations

   Blank 1

   offer

   After “whether,” the present-tense plural subject requires “offer.”

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

   Choose the correct option for each blank.

   It is essential that the study ___ appropriate controls.

   Choices for blank 1

   1. includes
   2. included
   3. including
   4. include
   Check answers and explanations

   Blank 1

   include

   Mandative “it is essential that” takes the base-form subjunctive.

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

   Choose the correct option for each blank.

   Only after systematic testing ___ the claim be considered reliable.

   Choices for blank 1

   1. the claim can
   2. can the claim
   3. the claim could
   4. could claim the
   Check answers and explanations

   Blank 1

   can the claim

   Fronted restrictive adverbials trigger subject-auxiliary inversion.

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

   Choose the correct option for each blank.

   The researchers aim to determine whether the benefits are genuinely heat-related, rather than merely ___.

   Choices for blank 1

   1. community
   2. communally
   3. communal
   4. communicate
   Check answers and explanations

   Blank 1

   communal

   The parallel adjective “communal” contrasts with “heat-related.”

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.