----- Oh, my goodness! My laptop must have got stolen. ----- But where _____ a thief have entered the house with all the doors and windows still locked?
#87959
A
should
B
could
C
dare
D
did
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—The problem wasn’t difficult for him,was it?—No,it wasn’t.He      a more difficult one.
#89698
A
should have been given
B
ought to be given
C
would have been given
D
must be given
Look! Tom is too sleepy to work.He _______ up watching TV.
#87635
A
mustn’t have stayed
B
shouldn’t have stayed
C
mustn’t stay
D
ought not to say.