Bài tập câu điều kiện

câu điều kiện:
1.i dind't knnown her number.i couldn't ring her
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2.the policeman showed me the way .i found the house
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3.i was not hungry.in didn't eat anything
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4.the driver in front stopped so suddenly.the acccident happened
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5.i didn't know that lan had to get up early .i didn't wake him
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