The reason for his success is ______ he worked very hard.
| A.why | B.that | C.whether | D.how |
Suan! Where have you been? You have no idea ___ worried I was !
| A.how | B.what | C.that how | D.what |
___ my opinion, Americans eat too much meat.
| A.in | B.over | C.on | D.above |
Most Saturday evenings they cook meals ___ open fire outside.
| A.in | B.over | C.on | D.above |
_____ in the queue for half an hour,Tom suddenly realized that he had left his wallet at home.
| A.To wait | B.Have waited | C.Having waited | D.To have waited |
The library needs _____,but it’ll have to wait until Friday.
| A.cleaning | B.to clean | C.being cleaned | D.to being cleaned |