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 danger
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 the may be late.
A.eaten B.to eat C.eating D.eat
26.Sound travels faster through warm air than_______through cold air.
A.it does B.sound does C.it is D.sound is
