The duties of a policeman are _____ than ____ .

A lot of money __________ at the charity show, but the cost of living __________ a lot, so we still need to do much work to help the disabled people.

－Mom, _____ I watch TV－Yes, you can. But you have to finish the homework first.

Is _______ Qinghai-Tibet Railway plays an importantrole in China’s railway history the topic that you’re coming to

Do you have anything to say for yourselves?—Yes, there is one point _________ we must insist on