He ________ the window of our classroom yesterday because he didn’t come to school.           
#88280
A
mustn’t have broken
B
mightn’t have broken
C
shouldn’t have broken
D
couldn’t have broken
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 Without electricity human life ________ quite different today. 
#89387
A
is
B
will be
C
would have been
D
would be
He hesitated for a moment before kicking the ball,otherwise,he  a goal.
#88972
A
had scored
B
scored
C
would score
D
would have scored
-----Did Mary come to the party?---I don’t know.She _____while I was out.
#87300
A
may have come
B
must have come
C
might come
D
could come