найдите боковые стороны равнобедренной трапеции, основания которой равны 14см и 8см, а один из углов равен 120градусов

Помогите пожалуйста!!!!!

Раскрыть скобки употребляя глаголы в таких временах : Present, Past, Future Simple; Present, Past, future Continuos; Present , Past Perfect

1. Look! He ( to look) strange without moustache. Why he ( to have) a shave? 

2. She says that tomorrow she ( to see) her favourite film at six oclock if she ( to come) home in time. 

3. There ( to be) nobody at my office yesterday. I ( to tell) everybody ( to go) home. 

4. I (no to think) that it ( to be) comfortable to ring him now. He just ( to arrive) from Europe and he ( to unpack) his things at the moment. 

5. When the old man shouted, the strangers ( to jump) off the fence and ( to run) away. 

6. I am sure that if they ( to see) me again, they ( to recognize) me at once. 

7. Sorry, I (not understand) you. Repeat please, what you just ( to say) 

8. Beth ( to come) by five oclock yesterday. She ( to come) into her room and ( to begin) reading an nteresting book which she ( to take) at the library

9. Andrew ( to feel) very excited yesterday as somebody ( to tell) him about the accident

10. Nick ( to be) happy last week because his father ( to allow) him to drive his car

11. Victiria ( tot be) always busy. She ( to be) busy nowtoo. Look! She ( to look) through the papers

12. Jane already ( to have) three letters from his parents since the day he ( to go) away

помогите пожалуйста написать структурную формулу 1-хлор 3,4-диаминогексановой кислоты