Make questions beginning with how long or since when:
1. We have been working at this problem for two years.
2. Students have been considering the examination requirements since 9 o'clock.
3. They have been writing an essay for three hours.
4. He has been carrying out experiments for a fortnight.
5. She had been taking English lessons since childhood.
6. They have been translate the article for two hours now.
7. Local authorities have been trying to curb pollution for years.

спасибо88    1   30.03.2020 13:49    1