---Could you please come to the museum with me this afternoon?---Sorry, I ______ . I have to take a piano lesson at 2 pm.
#74382
A
couldn’t
B
mustn’t
C
can’t
D
needn’t
推荐题目
-- Can I tell Peter about the news?-- No, I don’t want anyone else to know it. You ________ keep it to yourself.
#78287
A
must
B
need
C
can
D
may
