— Someone is knocking at the door. Is it Ann?
— It _____ be her. She is giving a performance at the theatre now.
| A．may | B．must | C．can’t | D．mustn’t |
----Your watch is so beautiful. It must be expensive.
----Not at all. It only ____ $4 .
A. cost B. spent C. took
We are all here ________ Tom, because he is ill at home.
A. except B. beside C. besides
---- Your sister isn’t a nurse, is she?
----- ________. She teaches English in a middle school.
A. No, she isn’t B. yes, she is C. Yes, she isn’t
I really don’t know _____ to do .
A. what B. where C. how
There is going to _______ a basketball match in the playground this afternoon.
A. has B. have C. be