第二部分知识运用（共两节，满分20分）
单项填空（共10小题；每小题1分，满分10分）
从A、B、C、D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 When you have some trouble in study, you need _____ teacher’s help.
A you B your C yours D yourself
22 The man _____ called up yesterday wants to buy the house.
A which B whom C who D whose
23 Both Beijing and Tianjin _____ in the north of China.
A is B was C were D are
24 The news _____ a storm was coming shocked everyone in the village.
A where B that C when D what
