问题
选择题
Mary is interested _____ volleyball, but she isn't good _____ it. [ ]
A. for; on
B. at; in
C. on; for
D. in; at
答案
答案：D
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Mary is interested _____ volleyball, but she isn't good _____ it. [ ]
A. for; on
B. at; in
C. on; for
D. in; at
答案：D
