2. 外语
  3. It takes a couple of years of regular driving before you become______at it.

It takes a couple of years of regular driving before you become______at it.

admin2013-06-19  30
问题 It takes a couple of years of regular driving before you become______at it.
选项 A、deficient
B、proficient
C、sufficient
D、efficient
答案B
解析 proficient表示“熟练的，精通的”，后可接in／at，如：She’s proficient in French．她精通法语。
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