We will never forget those happiest days _______ we spent on the summer camp.
A. which B. that C. when D. on which
We wondered __________ this afternoon.
A. whether we would have a meeting B. where would we have a meeting
C. whether we will have a meeting D. that we would have a meeting
The little boy was last seen __________ football by the river.
A. to play B. play C. played D. playing
They found __________ impossible to finish so much work in such a short time.
A. that B. it C. it is D. this
— I rang the bell for a long time last night, but no one opened the door.
— Oh, the family __________ a party and they didn’t hear the bell.
A. had B. were having C. had had D. have had
Great changes __________ in my hometown in the last five years.
A. took place B. have been taken place
C. had been taken place D. have taken place
