问题补充:
He tries English well. And he practices English every day.
A. to learn ; to speak
B. learning ; speaking
C. to learn ; speaking
D. learning ; to speak
答案:
A. to learn ; to speak
B. learning ; speaking
(答案→)C. to learn ; speaking
D. learning ; to speak
解析:句意:他尽力学好英语。并且他每天都练习说英语。try to do sth尽力做某事;try doing sth试着做某事。practice后跟v-ing形式作宾语,只跟v-ing形式作宾语的常见动词还有enjoy,mind,finish等。根据题意和动词用法选C。