Две автомашины движутся по дорогам, угол между которыми α=60°. Скорость автомашин V1 = 54 км/ч и V2 = 72км/ч. С какой скоростью V удаляются машины одна от другой?

Прошу помогите мне очень срочно!!!!!!!!!!!!! По граматическому сборнику упражнений автора Е.А Барашкова 6 класс.

176- Use the words in brackets to complete the sentences.
1 Yesterday Bob.........(come) home late.
2 He ......... (already/come). He is in the room now.
3 I ..........(not/see) him yesterday.
4 She ........(not/be)......London in 2003/
5 I...........(live) on a farm when I was five.

177- What tense should be used if the sentence has one of these words&
1-now -..........
2 at the moment -.........

3 in 1945 -............

4 the other day -.................
5 last week-.............
6 this week -.............

7 next week - ...........

8 already -.................

9 yet - ..............

10 the day before yesterday-............

179 - Fill in SAID or TOLD.

1 She .................... that she was happy to go there.

2 She .............. them that she was happy to go there.

3 Who............him about us?

4 Who.......... I am wrong?

5 He ......... it was a mistake.

6 And then she............. something strange.

7 The teacher....... us to bring the textbooks.

8 The teacher......... that we must come early.

9 The teacher......... to us that we must come early.

10 " We'll have a party on Sunday", she .............

И последнее...........

180 -Correct each sentence.

1.-I am going to London for Christmas. - Have good time!

2 I never saw such a beautiful bridge.

3 Foxes are biger than rabbits.

4 I have never hear such a silly story.

5 Have you had lunch an hour ago?

6 He just came.

7 I haven't seen him last Thursday.

8 Have you ever been in Africa?

9 Our teacher was to London two years ago.

10 How many theatres mwere there in Moscow at an end of the 19th centure?

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