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题型：单选题题类：真题难易度：普通

You won't find paper cutting difficult _____you keep practicing it.

A、even if B、as long as C、as if D、ever since

举一反三

Tom had to be told two or three times ________ he could remember what the teacher said.

There are signs _________ restauraunts are becoming more popular with families.

_____the damage is done, it will take many years for the farmland to recover.

________you have tried yourself can you learn what an exciting game it is.

—Does David love playing soccer?

—Yes. He plays soccer almost every day______it rains heavily.

Please don't call me at the office ________ it's really necessary.

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