Question 27
TensesChoose the word(s) or phrase(s) which best fill(s) the gap: He has only ordered some lettuce and tea. He .... on a diet. He is a bit too fat.
- A.can't be
- B.needn't be
- C.must be
- D.mustn't be
Show the answer and explanation
Answer: C (must be)
Explanation
The evidence (light meal, he is fat) leads to a confident conclusion, expressed with 'must be'.