问题描述：
we finish the work before five.A which that B that it C that which D it that .
you may use my room( _ ) you keep it clean.A.since B.as C.as long as D.so that.
I had a hard time( _ ) them to see the point.A to get B getting C get Dgot .
I'll see to ( _ )we finish the work before five.A which that B that it C that which D it that
you may use my room( _ ) you keep it clean.A.since B.as C.as long as D.so that.
I had a hard time( _ ) them to see the point.A to get B getting C get Dgot .
I'll see to ( _ )we finish the work before five.A which that B that it C that which D it that
问题解答：
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