连词成句。（注意大小写）

1. the, dish, is, where (?)

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2. toothbrush, this, is, your (?)

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3. need, I, to, my, wash, face (.)

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4. dirty, my, are, hands (.)

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5. you, can, him, help (.)

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当载荷大，速度较低和工作温度高时，应选用（）的润滑油。

A.黏度低

B.流动速度大

C.黏度大

D.任何黏度均可