( B )31.A.is B.are C.was
提示：由 the results of the student activity survey at Shude Middle School一句中results可知应该用复数形式
( A )32.A.or B.and C.to
提示：三或四次,后面的一句：Some students exercise ___ or twice a week也从侧面证明了应该填or
( C )33.A.one B.first C.once
提示：一次用once,由后面的twice,两次,也可推测除此出应该填写once
( A)34.A.to B.for C.like
提示：as to ,固定用法,当说到...,当提及.,至于.
( A )35.A.it B.them C./
提示:homework为不可数名词
( B )36.A.interested B.interesting C.interest
提示：人作主语用interested,物做主语用interesting
( C )37.A.play games B.do homework C.watch TV
提示：由语义可知此处讨论的事看电视的调查结果
( C )38 A.one B.kids C.students
提示：teachers当然对应students,从语义上讲三个答案都是正确的,但要考虑到上下文连贯
( A )39 A.look after B.take care C.look for
提示：look after,照顾好,虽然take care也有照顾的意思,但他要这样用：take care of sth/sb
( B )40 A.health B.healthy C.unhealthy跪求答案
提示：此处应该填写一个形容词,又根据意思只能选B,healthy,健康的