22．Collecting stamps as a hobby increasingly popular during the past fifty years.A. become

发布时间：2020-08-16 06:23:45


22．Collecting stamps as a hobby     increasingly popular during the past fifty years.
A. bees
B. became
C. has bee
D. had bee

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A. bees
B. became
(答案→)C. has bee
D. had bee
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