People wear glasses

⇒ Glasses are  worn.

The doctor ordered him to take a long rest.

⇒ He was ordered to take a long rest by the doctor.

Lightning struck the house.

⇒ The house was struck by lightning.

For the time being. Alice is teaching that group

⇒ For the time being, that group is being taught by Alice.

Our children keep a cat and a dog as pets.

⇒ A cat and a dog are kept as pets by our children.

$Đáp^{}$ $án^{}:$

1. Glasses are worn. 

2.  He was ordered to take a long rest by the doctor. 

3. The house was struck by the lightning.

4. For the time being , that group is being taught by Alice.

5. A cat and a dog are kept as pets by our children.

$Giải^{}$ $thích^{}:$

Cấu trúc câu bị động:

$S(O ^{}$ $của ^{}$ $câu^{}$ $chủ^{}$ $động^{})+tobe+$ $V_{PII}(+by$ $O^{}$$_{S}$$_{của}$ $_{câu}$ $_{chủ}$ $_{động}).$