题目内容

We have to() more clean energy to stop the pollution from worsening.

A. exploit
B. use
C. admit
D. create

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Li Na became ()player in tennis games after her many victories.

A. improved
B. refreshed
C. cleaned
D. seeded

The () land is unsuitable for any plant.

A. fertile
B. poor
C. rich
D. lean

Our common interest should () the differences we may have.

A. lead
B. bring
C. transcend
D. surpass

Efforts were made to () the river to prevent destructions brought by flood.

A. fight
B. retreat
C. harness
D. drive

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