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题型：单选题题类：常考题难易度：普通

Remember to wash your hands __________ you have meals.

A、before B、until C、though D、unless

举一反三

Practice more, _______ you'll learn English better.

We will have a picnic ________ it doesn't rain tomorrow.

We lost the soccer game, __________ everyone of us played very well.

Let's stay at home the weather is bad．

She stopped talking her mother came into the room.

My grandma is sixty-five years old, ______ she looks young.

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