Ответ:
1. The story must be told before it's too late.
2. The cat has to be fed 3 times a day.
3. The plants should be watered twice a week.
4. The gallery can be visited at Wednesdays and Fridays.
5. The address ought to be found out by now.
6. The telegram must be sent immediately.
Объяснение:
Модальные глаголы.
1)I'd be scared if my bedroom was the mouse
1. B: Oh, I have already seen it twice.
2. A: Do you know that Mrs Jones has been working here for sixteen years?
B: I thought she started working here ten years ago.
3. A: Have you ever met anyone famous?
B: Yes, last summer I sat next to Brad Pitt on a plane to LA.
4. A: How long ago did you start painting?
B: I have recently completed a painting that the Nationall Gallery asked me to do a year ago.