用适当形式填空（被动语态）
问题描述：
用适当形式填空（被动语态）
1.Young trees should _____(water) often.
2.People should pick apples and pears in autumn.
3.
答
1.Young trees should be watered(water) often.
2.People should pick apples and pears in autumn.
被动：Apples and pears shoud be picked in autumn.