问题

I soon found that the work I was doing hadalready been done by someone else. _______, I was wasting my time.

A:focused on
B:In a word
C:As a result
D:In addition

正确答案是：

同类题型

If you have a holiday, why not ________ on atrip?

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If you had ______ your test paper carefully befor handing it in. you would have made fewer mistakes. [ ]

－Miss Read is good ____ music.－And she can be good _____ children in the music club.