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單項(xiàng)選擇題

I thought things would get better, but（）it is they are getting worse.

A.as
B.like
C.for
D.since

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單項(xiàng)選擇題

The encouragement of competition in all possible fields should tend to（）the likelihood of war rather than increase it.

A.eliminate
B.accumulate
C.diminish
D.establish

單項(xiàng)選擇題

I began（）through the pages of a gardening catalogue.

A.thumbing
B.videoing
C.unscrewing
D.retrieving