单项选择题

______ of the speech computer, the lecturer was able to make himself heard.

A．In honor
B．In aid
C．With the aid
D．Instead

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单项选择题

Please give his decision plenty of ______ before you accept it.

A．conclusion
B．think
C．idea
D．time

单项选择题

I soon found that the work I was doing had already been done by someone else— ______, I was wasting my time.

A．in fact
B．in other words
C．in a word
D．as a result

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