Mary wants to learn to study in England so she often practices English with her friends.A

问题补充：

Mary wants to learn to study in England so she often practices English with her friends.

A. speaks

B. to speak

C. speaking

D. spoken

答案：

A. speaks

B. to speak

(答案→)C. speaking

D. spoken

解析：考查practice的用法。句意“玛丽想去英国上学，所以她经常和朋友一起练习说英语。”practice doing sth.“练习做某事”。故选C。