My mother often spends 2 hours ______ housework every day.
A. do B. does
C. doing D. to do
— Must I come at four o’clock?
— Oh, no, you ________.
A. don’t
B. mustn’t
C. don’t have to
D. can’t
It’s too cold. You had better ______ your coat.
A．don’t take off
B. not take off
C. don’t put on
D. not put on
-Would you mind _______ the window?
-Of course not. I feel hot, too.
A. not open
B. not opening
C. opening
D. to open
There _______ a football match next week.
A. will have
B. is going to be
C. have
D. is going to have
This article says________ is bad for our lungs.
A. smoke B. to smoke
C. smoked D. smoking
