单项选择题

A．expanding
B．extending
C．stretching
D．prolonging
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单项选择题
A．relyB．restC．dependD．count
A．rely
B．rest
C．depend
D．count
单项选择题
A．Climbing mountains.B．Swimming.C．Camping.D．Shopping.
A．Climbing mountains.
B．Swimming.
C．Camping.
D．Shopping.
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