English is spoken in the United States by them.
Was the window broken by him yesterday?
The flowers were watered by someone just now.
Sports meeting is put off by us because of the rain.
The work was finished by him just now.
More trees were planted by them last month.
A lot of beautiful flowers were seen by us there.
A book was given to me by him yesterday.
A gift was bought to me by him last week.
He is often seen to help others by us.
下列句子被改成被动语态
??? 句子呢?