把下列句子变成被动语态
问题描述：
把下列句子变成被动语态
He often makes model planes in his spare time
She taught us geography last year
He is weiging the stones
They may offer you a job
I saw Lily taking a walk this time yesterday
I saw Lily take a walk yesterday
We often hear him sing English songs
People have made him president
答
model planes are often made by him in his spare timewe are taught geography by her last yearthe stones are being weighed by himyou may offed a job by themLily was seen taking a walk by us yesterdayLil...