Must? Have to? Can't? Don't?

Complete the sentence: We ............. pick up our rubbish.

• can't

• don't

• have to

Complete the sentence: ....................... talk in the library!

• don't

• can't

• must

• have to

You have an exam tomorrow. You ................ go to bed late.

• must

• can't

• have to

Complete the sentence: We ........................ recycle our plastic bottles.

• don't

• can't

• must

Complete the sentence: We ...................... fish in this river.

• have to

• must

• can't

Look at the picture. Choose the correct answer.

• You can throw your trash in the ocean.

• Don't pollute the ocean!

• We must pollute the sea.

Choose the correct answer.

• You must not touch the sea turtle.

• You have to touch the sea turtle.

• You can touch the sea turtle.

Complete the sentence: We are at the beach. We................

• We have to throw our trash.

• We must protect the sea creatures.

• We can pollute the beach.

Complete the sentence: We are at the beach. We........................

• We must throw our trash on the beach.

• We have to pick up our trash.

• We can thros bottles into the sea.

Complete the sentence: We ......................... protect the whales and the doplhins.

• don't

• can't

• aren't

• must