It was not he took off his dark glasses I realized he was a famous singer.
| A．when; that | B．until; that | C．until; when | D．when; then |
Staff are allowed to take a ten-minute break every two hours to relax, use the bathroom or do ___________ else is necessary.
| A．something | B．anything | C．whatever | D．what |
Every solid object ______ reflect a sound，varying according to the size and nature of the object．
| A．must | B．shall | C．will | D．should |
I would be happier if you did more studying while you are free, but you ___________.
| A．don’t | B．didn’t | C．wouldn’t | D．weren’t |
The temperature on the inside of the car can be adjusted to suit the driver’s__________ in winter and summer.
| A．pleasure | B．preference | C．measurement | D．selection |
When he heard that his job application had been rejected, he struggled to _______ his feelings.
| A．get rid of | B．get over | C．smooth away | D．push away |