摘要: I dress my sister and wash her hands and face. 我给我妹妹穿衣服.洗脸洗手.
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—What are you doing for vacation?
—I'm ______ my sister.
—I'm ______ my sister.
[ ]
A. babysiting
B. babysit
C. babysitting
D. babysat
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B. babysit
C. babysitting
D. babysat