把下列句子变为被动语态Last week we cleand the classed Marry played the computer happily yesterdayEdision invented the light blubDid he turn on the TV last nightThe factory produces cars

The classroom was cleaned by us last week.
The computer was played by Mary yesterday.
The light bulb was invented by Edison.
Was the TV turned on by him last night?
Cars are produced by the factory.

The classroom was cleaned by us last week.
The computer was happilt played by Mary.
The light blub??? was invented by Edision.
Was the TV turned on by him?
Cars were produced by the factory.

Last week we cleand the classroom 变为 Last week the classroom was cleaned by us.Marry played the computer happily yesterday —— The computer happily was played by Marry yesterday.Edision invented th...

The class was cleaned by us last week.
The computer was played by Marry happily yesterday.
The light bulb was invented by Edison.
Was the TV turned on by him last night?
Cars were produced from the factory.