单项选择题

We (will have) to (put off) our departure (in the case) it (rains).（）

A．A
B．B
C．C
D．D

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单项选择题
The old man (will never) forget the event, (that) (has changed) his life (ever since).（）

A．A
B．B
C．C
D．D
单项选择题
Once (giving) (a set of) instructions, a computer can gather a (wide) ranger of information (for different purposes).（）

A．A
B．B
C．C
D．D
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