单项选择1.We should plant more trees and grass because they can

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单项选择
1.We should plant more trees and grass because they can stop the wind ____the earth way.
A. from blow B from blowing C. of blowing D. in blowing
2.You must come back home ____12.
A. for B. by C. in D. after
3.Please read this story carefully and try to ____ the answers.
A. see B. look C. look for D find out

1 B == prevent -- -from blowing Away
2 B BY == no later than ,before
3 D FIND OUT ==work out

we should plant more trees ,and..then the why should we plant more trees? We should plant more trees and flowers around us . We should We should plant more trees and _________ the wild animals li 将下列句子改为被动语态.1.We must plant more trees this year.2.Can they 用所给单词的适当形式填空.we can plant more trees.they are_(u We should plant more trees to make the air_____.(clean) When should we plant the trees They (〉in spring. 1.we should plant more trees to make our city _____.(green)为 We should plant more trees to make our city more b( ) Because I can plant trees in spring. We should plant more trees this year.怎么变被动语态?