【题目】---________ has brought about the improvement of Chinese farmers’ living standards?

【题目】Health experts believe that even a little exercise is far better than _____at all．

【题目】She _________in philosophy at Harvard.

【题目】With your help, there is no doubt ______ our plan is meant for will work out successfully．

【题目】_________ the children are excited - this is the first time they've been abroad.

【题目】John can finish this task quickly ______ using better methods.

【题目】The detective, pretending to be reading a newspaper, ________ at the man seated next to a woman．

【题目】The rooms _________ video cameras.

【题目】If this bill is not paid within five days, your gas supply will be________.

【题目】I'm ________ (that) she is lying.