manytimes,buthestilldoesn’tkno

_____ many times, but he still doesn’t know how to operate the machine properly.

A．Although I have shown him	B．I have shown him
C．Having been shown	D．Having shown

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A．and; what

B．but; that

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A．what; which

B．what; where

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–Don’t worry. There’s sure to be ____ parking lot nearby.

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—On the contrary, seldom ____ in my spare time．

A．I work out	B．did I work out
C．I worked out	D．do I work out

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A．contain

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