As soon as he arrived home, it started to rain.
A.Arriving home, he said it would start to rain.
B.No sooner had he arrived home than it started to rain.
C.He arrived home sooner than he had expected.
D.It started to rain and then he arrived home.

Choose the best answer to complete the following sentences.Only half of the exercises ____ so far, but the rest ____ by Saturday.
A.have been done / will have been finished
B.are being done / will be finished
C.done / have been finished
D.were done / are going to be finished

Because of the general pardon most of the prisoners ____ by the end of this year.
A.are being released
B.
C.will have been released
D.are released

The students ____ to stand up while the national anthem ____ and the flag ____ .
A.teach / singing / raised
B.are taught / is being sung / is being raised
C.were taught / sang / raise
D.taught / sang / is being raised

The medicine ____ at a high place where the children can't reach.
A.must be kept
B.must keep
C.must not keep
D.must be keeping

"The government has to take precautions against the hunters to protect the elephants because they are becoming extinct." Precautions ____ against the hunters to protect the elephants because they are becoming extinct.
A.have to be taken
B.are to be taken
C.has to be taken
D.were to be taken

Nothing ____ because it was very foggy and raining heavily.
A.could be seen
B.wasn't seen
C.is seen
D.didn't see

English ____ at state schools as a compulsory lesson for 20 years until last year.
A.is taught
B.has been taught
C.had been taught
D.was being taught

The students had complained about the questions because they had found them so difficult. The questions ____ because they ____ so difficult.
A.had complained about / had found
B.were complained about / were found
C.had been complained about / had been found
D.have been complained about / have been found

She has always had a good relationship with her stepmother.
A.She has always got on well with her stepmother.
B.Her stepmother has always been her good relative.
C.She has always got away from her stepmother.
D.Her stepmother has had her as her friend.