i went to plant trees yesterday改为疑问句

i went to plant trees yesterday改为疑问句 句型转换习题：1.The students went to plant trees yesterday.(改为一般疑问句 i'm going to plant trees 改为一般疑问句 I can plant trees.改为一般疑问句 they went to plant trees last sunday.英语一般疑问句 they went to plant trees last week.(变成一般疑问句) I went to Hefei yesterday.(改为一般疑问句) I went to a library yesterday 改为一般疑问句 i went to the farm yesterday改为一般疑问句 They went to plant trees 改为现在时 I can plant trees改为一般疑问句,为什么不用Can you plant trees?来回答呢? all of ---went to plant trees yesterday.是选they 还是 them 还是the