问题补充：
---Tom, why not stop a rest?
--- Oh, no, Mum. It’s so exciting that I can’t stop the kite.
A. having; flying
B. to have; to fly
C. having; to fly
D. to have; flying
答案：
A. having; flying
B. to have; to fly
C. having; to fly
(答案→)D. to have; flying
解析：本题考查的是stop to do sth表示停下去做另一件事，stop doing sth 表示停下做原来的事，故选D
