| Sometimes the police wear casual clothes to ____ special tasks. |
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| A. carry off B. carry on C. carry with D. carry out |
| 从方框中选择恰当的短语,并用其正确形式完成句子。 | |
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| 1. Reading in the sun wil 2 3. Everyday activities can _______the environment. 4. We should protect our earth _______. 5.The twins look the same and we can’t _______the differences between them. 6. More and more people have _______ collecting waste to keep our |