сор! Complete the sentences with the correct form of have to / must, don’t have to and mustn’t and the verbs in brackets. 1. The girl was very unhappy. I (do) something to help her. 2. We (work) hard to stop loneliness! 3. I (go) straight home after the match. I had lots of homework. 4. We always train before our volleyball matches, so we (be) late! 5. Tomorrow the shop won’t work. We (hurry)!

The giant panda is a rare species; there are very few left in the wild.

2 The landscape of the Alps is characterized by tall mountains.

3 The koalas are the star attraction of the local zoo.

4 The natural habitat of the giant otter is the rainforests of Brazil.

5 The Amazon is home to thousands of species of animals.

Fill in: spread, perform, absorb, gather, in the correct form.

1. Trees have deep roots that gather minerals and water from the underground.

2 Leaves absorb the energy for photosynthesis.

3. Chlorophyll is a substance that allows trees to spread sunlight.

4 Each part of the tree performs a particular role.