A. not until…that

B. after…when

C. until…then

D. before…that

25. Please telephone me half an hour _______.

A. in charge

B. in advance

C. in time

D. in front

26. Both Mary and Ellen， as well as Jan， _______ studying Chinese History.A. are

B. is

C. are being

D. is being

27. I‘d like to _______ him to you for the jo

B. He is a very clever and industrious boy.

A. refer

B. suggest

C. recommend

D. propose

28. It ______ that 200 people died and over 5，000 lost their shelters after the floo

D.

A. reported

B. reports

C. has been reported

D. has reported

29. He was asked to speak louder ______ all the other students in the classroom could hear him.

A. as

B. so as to

C. so that

D. so as

30. His report on the space exploration was really ________.

A. exciting

B. excited

C. excitement

D. excitedly /joozone.com