Question 15. If he spoke more clearly, __________ able to understand him.

• C. could be
  • This is a second conditional sentence (hypothetical situation in the present or future). "Could be" expresses a possibility in this hypothetical situation.

Question 16. If a fire broke out in the hotel, security arrangements would be tightened.

• A. were to stay
  • "were to" is used to express a hypothetical situation, especially a less likely one. It is a suitable alternative to "broke out" in this context.

Question 17. Anderson __________ settle down here if he found good employment offer.

• B. would
  • This is a second conditional sentence. "Would settle" indicates a hypothetical outcome.

Question 18. If we had known the programme better, it __________ been an easy job.

• A. would
  • This is a third conditional sentence (hypothetical situation in the past). "Would have been" is the correct structure.

Question 19. If the results of the customer survey __________ favorable, the supermarket introduces a new range.

• B. are
  • This is a zero conditional sentence (general truth or fact). "Are" is used because "results" is plural.

Question 20. When we go to the museum for entry, a lot of people won’t be able to visit it.

• C. charges
  • The sentence needs a verb that fits with the subject "museum". The museum charges for entry.

Question 21. If we didn’t have to work so hard, __________ we’ll spend more time together.

• B. we would
  • This is a second conditional sentence. "Would spend" indicates a hypothetical outcome.

Question 22. If the Spanish team continues to do so well, they __________ the World Cup.

• A. will win
  • This is a first conditional sentence (likely situation in the future). "Will win" expresses a probable future outcome.

Question 23. If you win this competition, you __________ get a free trip to England.

• A. will
  • This is a first conditional sentence. "Will get" expresses a probable future outcome.

Question 24. If you __________ dissatisfied with any of our workers, we will promptly replace them.

• A. are
  • This is a first conditional sentence. "Are" is the simple present tense needed for the condition.

Question 25. If they __________ the cause of the problem, they will be able to figure out how to prevent it from happening again.

• A. know
  • This is a first conditional sentence. "Know" is the simple present tense needed for the condition.

Question 26. The organizers would respond positively to proposals if they __________ submitted by 15th July.

• A. were
  • This is a second conditional in the passive voice. "were submitted" is the correct form.

Question 27. You __________ problems of discipline with your children if you __________ them watch TV for more than an hour.

• A. may have
  • "May have" expresses a possibility.

Question 28. If the form is correctly completed, the transfer __________ only two days.

• B. will take
  • This is a first conditional sentence. "Will take" expresses a probable future outcome.

Question 29. If I __________ you, I should try to see a consultant as soon as possible.

• B. were