— Jimmy had a lot of parties recently. — Yes, that might       why he didn’t do well in the test.
#72749
A
sum up
B
add up to
C
account for
D
count on
推荐题目
Go back home now, Mary. Your parents ______ your safety.
#63864
A
are concerned about
B
are concerned with
C
are concerned on
D
concern of
He really succeeded and he___his success to his hard work.
#83660
A
owned
B
owed
C
contributed
D
devoted
The southern part of Ireland was unwilling and       to form its own government.
#69239
A
broke out    
B
broke up
C
broke away
D
broke off