Passive voice with modals

It is clear or colored. It can be melted down and reused. It is used to make bottles or windows.

It is made from paper. It is used to make shoe boxes. It is soft when wet.

They are used to clean things. They can hurt your skin. Don’t drink them!

There are many kinds, and they have different uses. They help us do things that we can’t do with just our hands.

This is used to make cans and also cars. It’s used to make things that must be strong.

Natural things _____________ again. (can/grow)

• can grow

• can be growt

• can grown

• can be grown

Change the sentence to passive voice

"Astronauts may explore other planets in 2030"

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Aluminum cans __________ to be recycled. (must/melt)

some plastic ___________ in recycling containers. (may/put)

Clothes ___________ with natural dyes. (can/color)

• colored

• are colored

• can be color

• can be colored