21. – I prefer western food. It’s a kind of healthy food.

   -- ___ But western food is said to be high in sugar and fat.

   A. Is that right?                B. How do you know that?

   C. Do you really think so?        D. Who told you that?

22. --What do you want to do next? We have half an hour until the basketball game

   --____. Whatever you want to do is fine with me.

   A. It just depends    B. It’s up to you   C. All right   D. Glad to hear that

23. _______ from the top of the hill, the city takes the round shape with a flowing river through it.

A. Viewing    B. To be viewed     C. Viewed      D. To be viewing