问题
选择题
If (如果) he isn’t at school. Please call me _______ 453-7868. [ ]
A. in
B. at
C. on
D. for
答案
答案：B
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If (如果) he isn’t at school. Please call me _______ 453-7868. [ ]
A. in
B. at
C. on
D. for
答案：B