She didn't answer the phone.She ___ be asleep.
#88930
A
couldn't
B
mustn’t
C
might
D
had to
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If the dog hadn’t woken us, we wouldn’t have noticed the fire and it _____ to the house next door.
#86352
A
could spread
B
should have spread
C
would spread
D
might have spread
Do you think he is lazy？” “I _____ so once, but I don’t now.”
#88172
A
may have thought
B
can have thought
C
may think
D
might think
—Where ____ Margaret have put the empty bottles?—She ______ them away. They must be somewhere.
#89520
A
can; can’t have thrown
B
must; needn’t
C
must; must have thrown
D
can; must throw
______ it______ for your help，I couldn't have made any progress．
#86915
A
Had；not been
B
Should；not been
C
Did；not been
D
Not；be