A、Water is the only drink they can take. B、She thinks water is the best for health. C、Water is supposed to be readily available.

W: It’s a lovely day, isn’t it?
M: Yes, nice and sunny, with a fresh breeze blowing.
W: I hope the weather stays this way.
M: I think it will. At least the weather forecast says so, anyway.
W: That’s good.(19)It means we’ll be able to have picnic again. That’s something to look forward to.
M:(19)How about taking a trip to the West Hill this Saturday?
W: That’s great! Shall we have a picnic on the top of the hill? You like picnics very much, don’t you?
M: Yes, you know me very well. What should we take there? Should we take some fruit?
W: Yes, of course. I will take my favorite fruit—strawberries! Don’t you think it is very delicious?
M: Yes, but I think hamburgers are more delicious. Let’s take some drinks with us, too. What drinks do you like?
W:(20)I always drink water. I think it is supposed to be the healthiest drink. And I am afraid we must take a camera there. You know, it is very beautiful on the hill at this time of year.
M: That sounds exciting. I like to take photos very much and I will be the best photographer for you.(21)Let me make thorough preparations in case that we run out of film. When and where shall we meet?
W: Let’s meet at my home. I can ask my father to take us there in his car.
M: OK. Let’s meet at 9:00 then.
W: That’s too late for a hike!
M: But I’m afraid I can’t get up so early. I always like to stay in bed till late in the morning.
19. What are the two speakers talking about?
20. Why does the woman prefer to take water?
21. What would the man do to make full preparations for taking photos?