问题
选择题
Mary is _____ her brother. What about _____? [ ]
A. babysit, you
B. babysitting, your
C. babysiting, you
D. babysitting, you
答案
答案：D
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Mary is _____ her brother. What about _____? [ ]
A. babysit, you
B. babysitting, your
C. babysiting, you
D. babysitting, you
答案：D