第二部分 英语知识运用（共两节，满分45分）
第一节单项填空（共15小题，每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21. of the land in my hometown covered with trees and grass.
A. Two fifth ; is B. Two fifth ; are C. Two fifths ; is D. Two fifths ; are
22．These articles are written in simple language, ____ _ makes it easy to read.
A. which B. this C.that D. it
23. The water of the lake was so __________ that it looked like glass.
A. silent B. calm C. still D. quiet
24. I can’t quite remember ______you started doing the work
