-- I’m exhausted. I _____ on a project day and night.
-- You’d better have several days off after finishing it. Otherwise you might break down.
| A．worked | B．have worked |
| C．work | D．have been working |
This problem is not worth ______ again.
| A．to be discussed | B．discussing | C．being discussed | D．to discuss |
Antony _____ be an actor, for he doesn’t like plays or films at all.
must B. may C. can’t D. mustn’t
— Could I have a word with you, mum?— Oh , if you ______ .
| A．can | B．must | C．may | D．should |
He was homeless, so we took him ____．
| A．out | B．in | C．up | D．down |
Her mother ____ her stories patiently every evening when she was a little girl.
| A．was used to tell | B．is used to telling | C．used to tell | D．used to telling |