1You ............... not play with fire.
Wrong!
Use "must" with not to express strong prohibition.
2The children asked whether they ............... go for a swim.
Wrong!
Use "could" for permission in reported speech after a past-tense reporting verb.
3We ............... hear music playing in the next room.
Wrong!
Use "can" to express present ability or possibility.
4If you start now, you ............... reach there by midnight.
Wrong!
Use "will" for a confident future prediction.
5I did all that I ............... .
Wrong!
Use "could" as the past form of can in this sentence.
6He said that he ............... lay down his life for his country.
Wrong!
Use "would" as the reported-speech form of will after said.
7Work hard lest you ............... fail.
Wrong!
Use "should" after lest in this formal warning structure.
8I ............... pass; I am not sure.
Select 2 answers.
Wrong!
Both "may" and "might" can express weak probability or uncertainty.
9To whom ............... I address this letter?
Select 2 answers.
Wrong!
Both "could" and "should" can be used to ask politely for guidance here.
10............... you mind moving a bit?
Wrong!
Use "Would" in the polite request form would you mind plus an -ing verb.
11She ............... not wait any longer.
Wrong!
Use "need" with not to show that something is not necessary.
12I don't know whether I ............... have time.
Wrong!
Use "will" to refer to future time after whether in this sentence.
Done.
Score: 0/12
Answers
- You must not play with fire.
- The children asked whether they could go for a swim.
- We can hear music playing in the next room.
- If you start now, you will reach there by midnight.
- I did all that I could .
- He said that he would lay down his life for his country.
- Work hard lest you should fail.
- I may / might pass; I am not sure.
- To whom could / should I address this letter?
- Would you mind moving a bit?
- She need not wait any longer.
- I don’t know whether I will have time.

