David can speak idiomatic American English and yet, English, he doesn't know it at all. A．how to teachB．when it comes to teaching C．when he teachesD．however he teaches 题目和参考答案——青夏教育精英家教网—

题目内容

David can speak idiomatic American English and yet, _____ English, he doesn't know it at all.

A．how to teach	B．when it comes to teaching
C．when he teaches	D．however he teaches

when it comes to doing sth.是惯用法，意思是“当提到……的时候，”符合题意，而其它选项在逻辑上与上下文不符。

练习册系列答案

A．about which you talked	B．which you talked
C．about that you talked	D．that you talked

With his work completed, the businessman stepped back to his seat, feeling pleased_____ he was a man of action.

See the flags on top of the building? That was we did this morning.

Perseverance is a kind of quality and that’s ________ it takes to do anything well.

What the doctors really doubt is _____________ my mother will recover from the serious disease soon.

There’s little doubt _____ we will _____ the game.

A computer can only do ____ you have instructed it to do.

The way ___ you are doing it is completely crazy.

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