She was afraid that unless the train speeded up she would lose her _____ to Scotland.
| A．ticket | B．place | C．seat | D．connection |
Don’t blame your brother. He had____reasons for not supporting you.
| A．fragile | B．valid | C．grand | D．rough |
David, you _____play with the valuable bottle; you_______ break it.
| A．won’t; can’t | B．mustn’t; may |
| C．shouldn’t; must | D．can’t; shouldn’t |
Zhangqiang is said ______ the experiment in the lab, but I can’t find him there.
| A．to have done | B．to do | C．to be doing | D．doing |
I’ll go to meet you if I ________ free then.
| A．will be | B．would be | C．am | D．Was |
Jane helped me with my work last week when I asked for leave. ______, I’ll invite her to have dinner with me.
| A．In return | B．In turn | C．In time | D．In vain |