24. Peter likes doing sports ________ his brother prefers listening to music.

35．Fortunately we had a compass, without________we would have got lost.

31．America was_________was first called “India” by Columbus.

PART TWO LANGUAGE KNOWLEDGE
SECTION A
Directions: Beneath each of the following sentences there are four choices marked A, B, C, and D. Choose the one answer that best completes the sentence.
21．It was not ______ he took off his dark glasses ______ I realized he was Liu Xiang.
A．when; that          B．until; when    C．when; then    D．until; that

Peter was so angry at all ____ Mary was doing ___ he walked out.

I can never forget the day ____we worked together and the day _____we spent together.

She heard a terrible noise,__________ made her hair stand on end.

31．_____Tom has no interest in piano, there is no point pushing him to learn it．

27．The students wonder______ good the course will do to their future jobs．

See the flags on the top of the building? That was _______ we did this morning.