1.i like these 。English songs and they ____many times on the radio.
a.are taught b.have been taught 此题正确答案是B,但为什么不选A?
2.though we don't know what was discussed ,yet we can feel the topic _______.
a.was changed b.has been changed 此题正确答案是B,但为什么不选A?
3.The morning air is so good ___.
a.to be breathed b.to breathe此题正确答案是B,但为什么不选A?
4.to learn english well,we should find chances to hear english _____as much as we can.
a.speaking b.spoken 此题正确答案是B,但为什么不选A?
5.we had an anxious week _____for the results of the experiments.
a.to be waiting b.waiting此题正确答案是B,但为什么不选A?
6.i ___it as a basic principle of the company that suppliers of raw materials should be given a fair price for their products.
a.make b.take此题正确答案是B,但为什么不选A?
7.have you heard ____ news?The price of __petrol is going up .
a./;/ b.the;/此题正确答案是B,但为什么不选A, news这个词第一次出现,且是不可数名词,为什么要加the ?
8.last night Mr.li didn't come back at the usual time,____,he met some friends and stayed out until midnight.
a.however b.instead c.yet此题正确答案是B,但为什么不选A或C?
9.after the long journey,they went back home,______.
a.hungry and tired b. hungrily and tiredly此题正确答案是A,为什么?