3. Вставьте в предложения нужную форму глагола to be (am, is, are) ( ).
1. My friend _ riding a bike.
2. I _ watching a very good film.
3. We _ eating lunch.
4. He _ listening to music.
5. They _ helping their parents.

ответ: A​Complete the sentences with the correct word.

gone off • limestone • sea • erode • go around • dissolve • drop • freezing • unique • millipedes• blizzard

• heating up• moose

1. ……………… caves form as acidic rain …………………. the rock.

2. In caves there are a lot of ……………. species of fish, spiders, ……………, crabs and other creatures.

3. This meat has…………... Don’t eat it.

4. This cake is enough to …………………...

5. The most typical animals in the Appalachian Mountains are ……………….and racoons.

6. In Antarctica the temperature may to – 40 C in winter.

7. The winters in Antarctica are ……………………. cold!

8. The Earth is …………… due to global warming.

9. ………….. caves form as ocean waves and heavy rain ……………… the cliffs.

10. The weather forecast is warning people about the coming …………..

Объяснение решить

1) My friend is riding a bike

2)I am watching a very good film

3)We are eating lunch

4)He is listening to music

5)They are helping their parents