问题
选择题
Many businesses must have been badly influenced during that financial crisis, ________?
A．haven’t they
B．didn’t they
C．must’t they
D．weren’t they
答案
答案：D
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Many businesses must have been badly influenced during that financial crisis, ________?
A．haven’t they
B．didn’t they
C．must’t they
D．weren’t they
答案：D