21．-- I water the flowers every day?--No.you needn't．You can water them 3 times a week．A．Must B．May C．Need D．Can 【查看更多】

 

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--          I water the flowers every day?

--No，you needn't．You can water them 3 times a week．

A．Must                   B．May                    C．Need                     D．Can

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