问题
选择题
I have to study ______ my science test ______ Thursday afternoon. [ ]
A. at; on
B. on; for
C. for; in
D. for; on
答案
答案：D
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I have to study ______ my science test ______ Thursday afternoon. [ ]
A. at; on
B. on; for
C. for; in
D. for; on
答案：D