Question

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.

Answer 1

1.How long have you been working at this problem?
2.Since then have the students been considering the examination?
3.How long have they been writing an essay?
4.How long has he been carrying out experiments?
5.Since when she had been translate the article?
6.How long have they been translating the article?
7.How long have the local authorities been trying to curb pollution?

Answer 2

Я могу помочь вам сделать вопросы, начинающиеся с how long или since when. Вот возможные варианты:

1. How long have you been working at this problem? или Since when have you been working at this problem? 2. How long have students been considering the examination requirements? или Since when have students been considering the examination requirements? 3. How long have they been writing an essay? или Since when have they been writing an essay? 4. How long has he been carrying out experiments? или Since when has he been carrying out experiments? 5. How long had she been taking English lessons? или Since when had she been taking English lessons? 6. How long have they been translating the article? или Since when have they been translating the article? 7. How long have local authorities been trying to curb pollution? или Since when have local authorities been trying to curb pollution?

Надеюсь, это было полезно для вас.