You have worked for a long time. You ____________ be very tired.
| A．must | B．can’t | C．could | D．mustn’t |
It ________ over ten years since the dog ____________.
| A．is; died | B．is; has been dead | C．has been; has died | D．was; has died |
I have _____ milk here. Would you like to drink some, Mark?
A few B little C a few D a little
This is _____ and we must _____ on it.
A hard work; work hard B a hard work; work hard
C hard work; hard work D work hard; hard work
I don’t like physics ______ it’s too difficult for me.
| A．and | B．so | C．because | D．but |