问题
选择题
Students should by all means ______ their studies though there are a lot of attractions around them. [ ]
A. devote to
B. fix on
C. keep on
D. concentrate on
答案
答案：D
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Students should by all means ______ their studies though there are a lot of attractions around them. [ ]
A. devote to
B. fix on
C. keep on
D. concentrate on
答案：D
