—Hurry up, Mum. The lights are turned on. Dad has been back.—It _________ be him. He has gone to Shanghai.
#75758
A
must
B
can’t
C
mustn’t
D
may
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—Look! A book is on the floor. Whose is it?—It ______ be Rick’s. It has his name on it.
#75808
A
mustn’t
B
can’t
C
must
D
need
－Mom, I’m leaving. －It’s raining. You’d better ________ an umbrella with you.
#75719
A
to take
B
take
C
not take
D
taking
—How did he get my telephone number?—You ________ it . You told him last week．
#63204
A
should have forgotten
B
may have forgotten
C
must have forgotten
D
could have forgotten