—Why，I didn’t get you on the phone.—We ________football on the playground when you phoned.
#62277
A
must be playing
B
must play
C
must have played
D
must have been playing
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.--Your parents were anxious about you. You _____ home without saying a word. -- It’s my fault.
#63643
A
mustn’t be
B
shouldn’t have left
C
needn’t have left
D
couldn’t have left
The boss ______ the worker how to do it, or the accident couldn’t have happened.
#63303
A
can’t have told
B
ought to tell
C
could have told
D
mustn’t have told
When Harry was at college, he ________ go to the reading room after supper every day.
#62317
A
should
B
might
C
would
D
could
“Not having returned home yet, _________”, his father said to the police.
#63543
A
his mother got worried
B
his mother must be worried
C
I think he is missing
D
he must have got into some trouble.