He suddenly remembered that ___at home.
| A．he forgot his schoolbag | B．he left his schoolbag |
| C．his schoolbag had been forgotten | D．his schoolbag had been left |
Scientists say it may be five or six years_______it is possible to test this medicine on human patients.
| A．when | B．after | C．before | D．since |
You have to ____smoking. It isn’t good for your health.
| A．give up | B．give off | C．give in | D．give away |
---Must he remember everything he has learned in the class?
---No, he _____.
| A．can’t | B．may not | C．mustn’t | D．needn’t |
---“Don’t read in bed.”
--- What did he said?
---He told us _____read in bed.
| A．not to | B．not | C．don’t | D．didn’t |
American English is more or less different____British English______pronunciation and spelling.
| A．with; in | B．from; in | C．from; with | D．with ;on |