问题
选择题
I am sorry I can't come. I have to _____ my sister.[ ]
A. look at
B. look for
C. babysit
D. babysitter
答案
答案：C
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I am sorry I can't come. I have to _____ my sister.[ ]
A. look at
B. look for
C. babysit
D. babysitter
答案：C