单项选择题

It ______commonplace to think of sport as a "leisure industry" now.

A．became
B．will become
C．is becoming
D．had become
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单项选择题
Should English classes be ______at the elementary or primary school level in countries where it is not the native language
A required

B. necessary
C. selected
D. permanent
单项选择题
Two decades ago a woman who shook hands with men on her own ______was usually viewed as too for ward.
A．endeavor
B．initiative
C．motivation
D．preference
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