What time do you have to start to work?
I must go now. Bye-bye.
We aren't allowed to wear shorts at the University.
We can't do what we want.
You mustn't smoke here. It's against the rules.
I don't have to do the washing and ironing because my mother does it for me.
My mother has to work hard six days a week.
1) I see five white clouds.
Jake sees big white clouds.
2) I write my English books.
Katie writes her English books too.
3) I have a big ball.
My sister has a pink and fluffy ball.
4) I sing sad song.
My best friend loves to sing sad songs.
5) I ride my bike in the park.
My father rides his bike in the park all the time.
6) I count my chickens in the evening.
My mother always counts the chickens in the evening.
7) I play tennis on Saturday.
Alina also plays tennis on Saturday.
<span>1) We have been.... to the USA and we have seen.... its capital.
2) John hasn't fallen.... from his bike.
3) Have you walked.... in Central Park of New York?
4) She has already done.... her homework.
5) Has Kate eaten.... her vegetables?
6) My brother has run... ten kilometres.
7) Has Boris ever swum.... in the sea?- No.he hasn</span><span>’t.
8) They have written..... a letter to a president.
9) My parents have never visited.... Paris.</span>
I had talked with my friend - Past Perfect
I talked with my friend - Past Simple
I was talking with my frient - Past Continious
I had been taling with my friend - Past Perfect Continious
1. Чем меньше компьютер, тем быстрее он может работать. Не забыть сделать акцент на "мочь".
2 Он был вынужден много работать, прежде чем ... to have to...- эквивалент модального глагола "должен", но со смыслов "вынужден".
5... долгосрочные орбитальные станции и лаборатории с исследователями
Остальное вполне хорошо переведено