题目内容

简笔器物表现最适合的角度是和。

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Climate change may be a big problem, but there are many little things we can do ______.

A. making a difference
B. to make a difference
C. made a difference
D. make a difference

One of the ways ______ the amount of greenhouse gases that we put into the air is to buy products that don't use as much energy.

A. reducing
B. to be reduced
C. reduced
D. to reduce

The best time ______ is September and October.

A. to visit Tianjin
B. visited Tianjin
C. to have visited Tianjin
D. to be visited Tianjin

Some people use less energy by ______.

A. carpool
B. to carpool
C. carpooling
D. being carpooled

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