单项选择题

Mrs. White has a hard time because she has six children ______.

A．look after
B．to be looked after
C．to look after
D．looking after
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单项选择题
Why can’t Helen come for the meeting
[A] She has to visit Bob.
B. She has to do her homework.
C. She has to look ’after her mother at home.
单项选择题
What’s the price of one cup
A． $ 35.
B． $ 65.
C． $ 20.
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