17．I’m ____a diet, since I put ____ weight easily.
| A．in; on | B．on; in | C．in; in | D．on; on |
He didn't tell us the truth ___ elevent o’clock last night.
| A．until | B．unless | C．since | D．for |
One day a young man named Herry ___ a taolor’s shop to buy a new coat.
| A．called on | B．called at | C．called for | D．called up |
--Beg your pardon, please.I didn't quite catch what you said.---Oh, I ___ to myself.
| A．had talked | B．talking | C．talked | D．was talking |
He’s still suffering ___headche. He can't get rid of it.
| A．on | B．from | C．with | D．to |
--Are you going to visit the exhibition this afternoon?—I’m not sur.Perhaps I’ll find __ other time.
| A．the | B．some | C．an | D．one |