155. In Beijing volunteers are making use of every minute to their foreign languages beca

发布时间：2020-08-16 07:09:43


155. In Beijing volunteers are making use of every minute to      their foreign languages because volunteers must pass a written test and an interview.
A. polish up
B. take up
C. put up
D. make up

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A. polish up
B. take up
C. put up
D. make up
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