【題目】People plant a lot of trees on Tree Planting Day every year.（改為被動(dòng)語態(tài)）

A lot of trees __________ __________ on Tree Planting Day every year.

【答案】are planted

【解析】

句意：人們?cè)诿磕曛矘涔?jié)都會(huì)種很多樹。

題目要求改為被動(dòng)語態(tài)，根據(jù)題目中plant和“every year”可知，句中時(shí)態(tài)為一般現(xiàn)在時(shí)，所以此處使用一般現(xiàn)在時(shí)的被動(dòng)語態(tài)，結(jié)構(gòu)為is/are done；主語trees是復(fù)數(shù)形式，所以be動(dòng)詞用are；動(dòng)詞plant的過去分詞為planted。故填are；planted。

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