I can ride bike but I can’t ride horse.A. the; /B. the; aC. /; /D. a; a

问题补充：

I can ride bike but I can’t ride horse.

A. the; /

B. the; a

C. /; /

D. a; a

答案：

A. the; /

B. the; a

C. /; /

(答案→)D. a; a

解析：ride a bike是骑一辆单车 哪辆都可以，表泛指；而ride the bike就是特指这一辆。ride a horse同理。本题说我会骑自行车和马，表泛指，故选D。