题目内容
-The charity walk begins ________ 9.00 a.m.Don't be late.
-No problem.
[ ]
A.in
B.at
C.on
D.to
答案:B
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题目内容
-The charity walk begins ________ 9.00 a.m.Don't be late.
-No problem.
A.in
B.at
C.on
D.to