Their youngest girl is at the stage ______ she can say a single word but not a full sentence
| A．when | B．which | C．that | D．where |
Ladies and gentlemen, please fasten your seat belts. The plane________.
| A．takes off | B．is taking off | C．has taken off | D．took off |
The lady insisted that the young man ____her wallet and____to the police station at once.
| A．had stolen; be sent | B．should steal; sent |
| C．has stolen; sending | D．steal; had been sent |
Many students believe the choice of their courses and universities should ______ their own interests.
| A．be based on | B．based on | C．be basing on | D．base on |
I’ve got to go now. Something has just _________ at school and I’m needed there.
| A．come to | B．come in | C．come up | D．come over |
The Australian boy has a good _____ of Chinese and can communicate with others freely.
| A．request | B．command | C．demand | D．usage |