．__________, we would not have achieved so much.
| A．If they didn’t help us | B．If it hadn’t been their help |
| C．Weren’t it for their help | D．Had it not been for their help |
The rest of the apple _________.
| A．were throwing away | B．was throwing away |
| C．were thrown away | D．was thrown away |
Only when his mother arrived ___________.
| A．the boy stopped crying | B．stopped the boy crying |
| C．the boy did stop crying | D．did the boy stop crying |
–Do you know the ____ woman by the chairman?
--Yes. But could you introduce to me the man _____ by the reporters?
| A．smiling; questioned | B．smiled; questioning |
| C．being smiled; questioned | D．to smile; to question |
Suddenly it ____ me that if I let him go, he would never come back again.
| A．knocked | B．beat | C．hit | D．whispered |
They often change the kind of crop in each field ____ few years, for example, growing corn or wheat and then the next year peas or soybeans.
| A．every | B．a | C．each | D．some |