单项选择题

Reading is an excellent way of ______ your experience.

A. enrich
B. enriching
C. enriched
D. to enrich
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单项选择题
You'd better deal with the problem while it is still ______.
A. managed
B. manageable
C. managing
D. management
单项选择题
Have you ever spent a lot of time ______ for a perfect Christmas present
A. search
B. to search
C. searching
D. searched
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