Fill in the blanks with an appropriate auxiliary verb.
1Anybody who wants to participate ............... register. (Ability)
Wrong!
"Can" expresses ability in this sentence.
2I ............... have bought that car if I had had more money. (Past ability)
Wrong!
"Could" is used in "could have bought" to talk about past ability in an unreal situation.
3She ............... arrive in the afternoon. (Possibility)
Select 2 answers.
Wrong!
"May" and "might" both express possibility here.
4"We went hiking yesterday." "That ............... have been a lot of fun." (Logical conclusion)
Wrong!
"Must" expresses a logical conclusion about the past in "must have been."
5One day, it ............... be possible to connect with extraterrestrial life. (Future prediction)
Wrong!
"Will" is used for a future prediction.
6I ............... pay you back when I get a job. (Promise)
Wrong!
"Will" can express a promise about the future.
7Glass ............... be blown. (Theoretical possibility)
Wrong!
"Can" is used to express theoretical possibility.
8You ............... have called me if you weren't coming. (Criticism)
Wrong!
"Should" is used in "should have called" to criticize a past action.
9You ............... not violate the law. (Prohibition)
Wrong!
"Must" with "not" expresses prohibition.
10The saplings ............... be watered regularly. (Necessity)
Wrong!
"Must" expresses necessity in this passive sentence.
11By next December, I ............... have been teaching here for twenty years. (Future certainty)
Wrong!
"Will" is used in this future perfect continuous form.
12What ............... we do now? (Asking for suggestion)
Select 2 answers.
Wrong!
"Shall" and "should" can both be used to ask for a suggestion here.
Done.
Score: 0/12
Answers
- Anybody who wants to participate can register. (Ability)
- I could have bought that car if I had had more money. (Past ability)
- She may / might arrive in the afternoon. (Possibility)
- “We went hiking yesterday.” “That must have been a lot of fun.” (Logical conclusion)
- One day, it will be possible to connect with extraterrestrial life. (Future prediction)
- I will pay you back when I get a job. (Promise)
- Glass can be blown. (Theoretical possibility)
- You should have called me if you weren’t coming. (Criticism)
- You must not violate the law. (Prohibition)
- The saplings must be watered regularly. (Necessity)
- By next December, I will have been teaching here for twenty years. (Future certainty)
- What shall / should we do now? (Asking for suggestion)
