用括号内所给动词的适当形式填空,需借助助动词.1、Should these food (keep) dry?2、The

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用括号内所给动词的适当形式填空,需借助助动词.1、Should these food (keep) dry?2、The work can (fin
用括号内所给动词的适当形式填空,需借助助动词.1、Should these food (keep) dry?2、The work can (finish) by 5：00pm.3.Don't copy other's homework should （do） by yourselves.4.These magazines mustn't (take) out of the reading room.5.More trees and flowers should (plant)in our school.

1、Should these food be kept (keep) dry?
2、The work can be finished (finish) by 5：00pm.
3.Don't copy other's homework. you should do（do） by yourselves.
4.These magazines mustn't be taken (take) out of the reading room.
5. More trees and flowers should be planted (plant)in our school.