The volleyball match will be put off if it ______tomorrow. A. rained B. rains C. will rain

1.The volleyball match will be put off if it ______tomorrow.
A. rained B. rains C. will rain
正确答案选择（B）.因为这是考察if引导的条件状语从句，主从句的时态，遵循主将从现。
2.---May I ask you a few questions?
--- __________
A. No, you don’t B. Sure, go ahead C. No, you just have five minutes.
正确答案选择（B）.用排除法，因为对于委婉请求的句式，肯定回答通常用当然了，go ahead在这里的意思就是“说吧”。
3.I want to buy two _________ for my son.
A. pair of shoe B. pairs of shoe C. pairs of shoes
正确答案选择（C）.因为表示一双用a pair of ,空前有two, 就需要在pair后面加s ,两双鞋，鞋也要加s .
4.The cake is made _____ my grandmother.
A. by B. from C. of
正确答案选择(A).因为涉及be made 的有关固定短语，be made of /from 都表示由什么制作，后面接材质类的词，be made by 表示由某人制作。