_____ I shouted at the top of my voice _____ turn his head.
| A．Not until; did he | B．Not until; he did |
| C．Until; he did not | D．Until; did he not |
It was with the help of the local guide ______ the mountain climber was rescued.
| A．who | B．that | C．when | D．how |
—What’s all that noise about outside?
—Oh, I forgot to tell you. The road to the railway station ______.
| A．will be widened | B．is to be widened |
| C．has been widened | D．is being widened |
We human beings should be very careful with what we do with nature, _____power is beyond our understanding.
| A．that | B．which | C．whose | D．where |
Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.
| A．of; at | B．by; in |
| C．of; on | D．on; at |
Everybody in the village likes Jack because he is good at ______ and telling jokes.
| A．making up | B．turning up |
| C．putting up | D．showing up |