—Are you free after school?
—Sorry, I’ve planned to treat a friend of mine to dinner ______ for help.
| A．in order | B．in return | C．in turn | D．in honor |
Mrs. Black doesn’t believe her son is able to design a digital camera, _____?
| A．is he | B．does she | C．doesn’t she | D．does he |
—Shall I lock the lab now before I go home?
—_____. I’ll check it myself later.
| A．Go ahead | B．No problem | C．All right | D．Don’t bother |
. ----Promise you’ll never wear this kind of dress!
----________. What if I will give a performance?
| A．It’s up to you | B．That reminds me | C．That depends | D．I forget that |
I think you should complain----______, of course, you are happy with the way things are.
| A．if | B．unless | C．as | D．because |
. Only when Tom fully recovered ______ back to work.
| A．did he go | B．he went | C．had he gone | D．he had gone |