问题
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完形填空,选择正确答案。 | |||
The traffic lights are the 1___________ in every country. There are always 2___________ lights: red, yellow and 3___________. Red means " 4___________". Yellow means " Wait ", and green means " 5___________".
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答案
1. B 2. B 3. A 4. B 5. C