Сделайте ) his motor bike when his eat) my lunch when the phone ring ).he ) his bicycle to school when ) his bag. we ) a bad accident as ) to the airport. tom ) the match when the down). ) when ) into the room.

1. was repairing, arrived
2. was eating, rang
3. was riding, dropped
4. saw, were driving
5. was watching, broke down
6. were talking, came

Принцип: сложное предложение - 2 части. 1 часть - продолжительное действие, 2 часть - резкое действие. Например: Я мыл посуду, когда мама пришла. - I was washing up when my mother came home.

1. was repairing, arrived 2. was eating, rang 3. was riding, dropped 4. saw, were driving 5. was watching, broke down 6. were talking, came

1 Hello, Jack. How long have you been here? - Three days. I came here last Thursday. 

2 Where and when did you buy this dress? - I bought in Moscow, but I don't remember in which shop. I have had it for half a year already. 

3. It has been raining since morning. It started to rain at 9 and still hasn't stopped. - What a pity! 

4 We have been waiting for Victor for 15 min. Where has he gone? The match has already begun. - Don't worry. I have just seen him. He was buying an ice cream a minute ago. 

5. How long have you known Mr. Johns? - I have known him for 3 years. He has been teaching me English since 1995. 

Achievement – achieve (достижение – достигать)
resistance – resistant (сопротивление - стойкий, прочный)

celebration – celebrate (празнование – праздновать )
difference – different (различие – различный)
city – citizen (город - горожанин; горожанка, городской житель)
nation - national – nationality (страна, народ - народный, национальный - национальность)
measure – measurement (измерять - измерение)
develop – development (развивать, разрабатывать – развитие, разработка)
act - active – activity (действовать – действующий – деятельность )
graduate - graduation - undergraduate - post – graduate (оканчивать – окончание – студент - аспирант)
educate – education (обучать; давать образование – образование)
govern - governor –government (управлять - правитель, тот, кто управляет – правительство)

  2)
changeable - меняющийся, непостоянный, изменчивый, неустойчивый
convertible - трансформируемый, превращаемый; изменяемый
breakable - ломкий, хрупкий
comparable - сопоставимый, соизмеримый
desirable - желанный, желательный
profitable - прибыльный, выгодный, доходный, рентабельный
readable - хорошо написанный, интересный, чёткий; удобочитаемый
comfortable - уютный, удобный
respectable - почтенный; респектабельный; приличный
expectable - ожидаемый, вероятный