Question

— Jimmy had a lot of parties recently.
— Yes, that might       why he didn’t do well in the test.

A．sum up

B．add up to

C．account for

D．count on

Answer 1

C

短语辨析.   A.总结;B.合计达;C.说明……的原因；D.指望；依靠。句意，吉米最近参加了很多聚会。——是的，那可能说明了他这次考试不好的原因。选C。