2 . ________ with the size of the whole earth，the biggest ocean does not seem big at all.

A．Compare	B．When comparing
C．Comparing	D．When compared

3 . Only in an hour ago      out why he was absent.

A．did the teacher found	B．the teacher found
C．did the teacher find	D．had the teacher found

4 . David said that it was because of his strong interest in literature___he chose the course.

A．that	B．what
C．why	D．how

5 . The students in our school expected ______ more time for reviews and exercises before the College Entrance Examination next year.

A．there being

B．there has

C．there had

D．there to be

6 . A driver should           __ the road when            .

A．concentrate on; drive	B．concentrate in; driving
C．concentrate to; drove	D．concentrate on; driving

7 . An awful accident_____，however，occur the other day.

A．does

B．did

C．has to

D．had to

8 . Only when he reached the teahouse 　　 it was the same place he’d been in last year.

A．he realized

B．realized he

C．had he realized

D．did he realize

9 . Not until the early years of the 19^th century ________ what heat was.

A．man did know	B．did man knew
C．didn't man know	D．did man know

10 . Not until the woman was out of work again two months ago ____ going to attend a training class.

A．had she considered	B．did she consider
C．she considered	D．she had considered