English well one must have a lot of practice.A. SpeakB. SpeakingC. To speakD. Speaks

问题补充：

English well, one must have a lot of practice.

A. Speak

B. Speaking

C. To speak

D. Speaks

答案：

A. Speak

B. Speaking

(答案→)C. To speak

D. Speaks

解析：句意：为了说好英语，必须有许多的练习。前面是讲练习的目的。因此用to do sth.故选C