1. I can’t/am not able to answer this question.
2. When I was three I could/was able to understand what I was told.
3. I can/am able to call you tomorrow.
4. Could you/Are you able to answer the phone, please?
5. My sister can’t/isn’t able to sing but she can/is able to dance.
6. I can/will be able to perform this trick in two weeks.
7. The fireman could/was able to save the cat.
8. I can’t/couldn’t visit you this week.
9. Can/Could you speak German?
10. The doctor is free. He can/is able to examine you.
will have been completed - Строительство моста и дамбы будет закончено к началу сезона навигации.
are being constructed - В настоящее время в Европе и Азии строятся 2500 км скоростных линий.
maintains - система кондиционирования воздуха всегда поддерживает оптимальную температуру и влажность в вагоне.
is being built - В настоящее время новая высокоскоростная железнодорожная линия строится на севере России.
has caused - Потоп значительно повредил железнодорожную ветку.
1.
2.was
3.were
4.was
5.were
2.
2.did you buy it in Turkey?
3.did Stacey get one from him?
4.did Irina give it to you?
5.did Mark see it?
3.
2.when was he ...
3.why were they ...
4.who were
5.what was
6.where was...
4.
2.what did you have for lunch yesterday?
3.why did Steve go to New York?
4.when did you learn to play chess?
5.who did dance with you at Sally's party?
6.how often did you go sailing in the holidays?
5.
2.it wasn't a true story
3.there weren't ghosts in the castle.
4.there wasn't a monster in the lake
5.I wasn't silly.
6.
2.I didn't meet
3.sun didn't shine
4.we didn't go
5.I didn't know
6.I didn't dance
7.I didn't like