填空题

It is important that he ______ (be) called back immediately.

【参考答案】

(should) be
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It is ______ (reason) for parents to pay for their children’s education.
单项选择题
A．An air hostess.B．An airline clerk.C．An operator.D．An airline manager.
A．An air hostess.
B．An airline clerk.
C．An operator.
D．An airline manager.
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