第二部分英语知识运用（共两节，满分55分）
第一节单项填空（共25小题；每小题l分，满分25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, 并将答案填写到答题卡上。
例：We ______ last night, but we went to the concert instead.
A. must have studied B. might study C. should have studied D. would study
答案是C。
21. Lory didn’t come back __________ we finished our homework.
A. when B. while C. until D. if
22. These pictures will show you ______.
A. what our village looks like B. what does our village look like
C. how does our village look like D. how our village looks like
