______ us prepare for the exam，the teacher suggested reading through our notes．（ ）
| A． |
To help |
B． |
Helped |
| C． |
Helping |
D． |
Being helped |
If we _______ adequate preparations, the conference wouldn’t have been so successful.
| A．haven’t made | B．wouldn’t make |
| C．didn’t make | D．hadn’t made |
Without the development of the Internet, Taobao and Tmall______$ 5.7 billion in sales on 11 November, 2013.
| A．wouldn't make | B．didn't make |
| C．hadn't made | D．wouldn't have made |
He was very nervous in the contest．Otherwise，he _____________ the first prize．
| A．will win | B．would win |
| C．would have won | D．had won |
I didn’t know that he was a cheat, or else I ________________ him.
| A．should have believed | B．shouldn’t believe |
| C．wouldn’t have believed | D．couldn’t believe |
________ the present unemployment continue, the society would face a more
troublesome situation.
| A．Would | B．Should |
| C．Might | D．Could |