могут ли все углы выпуклого четырехугольника быть тупыми - №19683374

могут ли все углы выпуклого четырехугольника быть тупыми
- Предмет:
  Геометрия
- Автор:
  tysonqjzh
- 5 лет назад

Ответы 1

нет немогут.................
- Автор:
  romualdo
- 5 лет назад
- 0
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9. Put in the past participles of the verbs in brackets.
► We've found (find) all the answers.

Have you………………………. (wash) the car?

You haven't (eat) very much.

They've………………….. (open) a new supermarket.

You've…………………………… (write) it in pencil.

I've……………………… (make) the sandwiches.

We've………….. (have) our lunch.

United have………………….. (score) a goal.

The balloon has……………… (land) in a field.

Who's………………………….. (break) this glass?

It's warm because the heating has (be) on.

Have you (sell) your flat yet?

I've…………………………… (finish) that job at last.

10. Complete the second sentence so that it follows on from the first. Use the present perfect.
► My hair is tidy now. I‘ve brushed my hair.

The door is open. Someone the door.

This is Oliver's drawing, look. Oliver ………….. a picture.

The calculator is broken. Someone…………………………… the calculator.

United are the winners. United …. the game.

There's no more wine in the bottle. We all the wine.

The floor is clean now. I the floor.

I know my number now. I………………………. my number by heart.

The guests are here now. The guests

I'm still working on the computer. I with the computer yet.

11. Decide which word is correct.
► I'd like to borrow this book. Has Anna read it yet? a) done b) for c) just d) yet

Ben writes very quickly. He's………………finished his essay, a) already b) been c) for d) yet

What are you going to do? ~ I don't know. I haven't decided

a) just b) long c) since d) yet

3 I've to London. I went there in June.

a) been b) gone c) just d) yet

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a) ever b) for c) just d) long

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I haven't seen that coat before. How have you had it?

a) already b) for c) long d) since

7 The girls have to the cinema. They won't be back until ten o'clock.

a) already b) been c) gone d) just

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a) already b) before c) for d) since

9 This is the first I've ever lived away from home.

a) already b) since c) that d) time

10. This programme must be new. I've seen it before.

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