Young trees must . A. looked after well B. be looked after well C. be taken good care D. ta——青夏教育精英家教网—

摘要： Young trees must . A. looked after well B. be looked after well C. be taken good care D. taken good care of

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1These young trees must .

A. look after well B. be well looked after

C. take good care of D. be taken good care

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