–Your phone number again? I _____ quite catch it.
–It’s 9568442.
| A．didn’t | B．couldn’t | C．don’t | D．can’t |
She wasn’t a much older tennis player but he had the great ______ of experience about games.
| A．interest | B．advantage | C．benefit | D．profit |
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 |
----Has Tom already finished his new story?
----I have no idea. He ______ it last month.
| A．had written | B．was writing | C．would write | D．wrote |
You have a big mouth, Tom. You _______ have told everybody the secret.
| A．can’t | B．mustn’t | C．shouldn’t | D．mightn’t |