The first use of atomic weapons was in 1945, and their power __________ increased enormously eversince.
| A．is |
| B．was |
| C．has been |
| D．had been |
I can guess you were in a hurry. You _____ your sweater inside out.
| A．had worn | B．wore | C．were wearing | D．are wearing |
—Your phone number again? I _____ quite catch it.
—It’s 89703388.
| A．don’t | B．can’t | C．couldn’t | D．didn’t |
—Lucy is not coming tonight.
—But she ___!
| A．had promised | B．will promise | C．promised | D．promises |
—Is this raincoat yours?
—No, mine _____ there behind the door.
| A．hangs | B．is hanging | C．has hung | D．is hanged |
Lily _____ a book about China last month but I don’t know whether she has finished it.
| A．wrote | B．had written | C．is writing | D．was writing |