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МатематикаВопрос:
2. It's warm because the heating has (be) on.
Ответ:
been
Похожие
- 1. We always start/are starting our classes at 8.
- 2. I think/am thinking about my boyfriend.
- 3. Scientists believe the weather changes/is changing.
- 4. I don't see/am not seeing what the problem is.
- 5. I can't understand why you laugh/are laughing.
- 6. Why do you look/are you looking at me like that?
- 1. Who's (break) the glass?
- 3. Have you (sell) your flat yet?
- 4. The guests have (go) at last.
- 1. Why / Andy and Liz / quarrel?
- 2. What / you / say to Mike?
- 3. I / often try to stop smoking.
- 4. Cecily / speak / to you / today?
