第二部分英语知识运用（共两节，满分35分）
第一节语法和词汇知识（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．No one can possibly know____when an earthquake will strike.
A．in vain B．in return C．in advance D．in clanger
22．The family have decided to build a new home＿＿＿＿their house existed before the earthquake.
A. when B. where C. before D. until
23．He was so rude! I＿＿＿away then, but I didn’t want to ruin the party.
A. should have walked B. must have walked
C. must walk D. ought to walk
24．See? The strange man I saw yesterday______ around my house again. Should I call the police?
A. walk B. walked C. has walked D. is walking
25．Jennifer will stop_______dinner, so she may be late.
A. eaten B. to eat C. eating D. eat
