【题目】There are over 50,000 signs in modern Chinese but luckily, Chinese children ______ learn all of them for everyday purpose.

【题目】The weather here is great, with temperatures ______ from a low of 55°F to a high of 75 °F in the summer.

【题目】Physical labour can exhaust the body very quickly. ______, too much study can rapidly reduce mental powers.

【题目】One advantage of living on the top floor is that you can get a good ______.

【题目】What color is Jim’s hair?

【题目】The government will force companies to ________ any possible measure to reduce air pollution.

【题目】What is true about Ellen?

【题目】The Obama government has reformed on tax system.What people doubt is ______ it will do them any good．

【题目】Nuclear ______ be really dangerous at times even though it’s a nice energy in general．

【题目】 Why is the man late?