单项选择题

Which signal is a call for help

A．Shouting here and there.
B．Crying twice.
C．Shouting or whistling three times together.
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单项选择题
The woman thinks that her daughter should do her homework ______.
A．by herself
B．with the mother
C．with the classmates
单项选择题
Maria doesn't have any activities after school for ______ afternoons in a week.
A．two
B．three
C．five
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