Краткое пояснение: Необходимо составить вопросы, используя "how long" (как долго) и "when" (когда), чтобы узнать о продолжительности и времени начала действия.
- It's raining.
- How long? How long has it been raining?
- When? When did it start raining?
- Kate is learning Japanese.
- How long / learn? How long has Kate been learning Japanese?
- When / start? When did Kate start learning Japanese?
- I know Simon.
- How long / you / know? How long have you known Simon?
- When / you / first / meet? When did you first meet Simon?
- Rebecca and David are married.
- How long? How long have Rebecca and David been married?
- When? When did Rebecca and David get married?
Ответ: See above