—Hi,Tom.Howcanyouimproveyourmathssomuch?—Oh,nothingdiff...

问题详情：

—Hi, Tom. How can you improve your maths so much?

—Oh, nothing difficult. The        you work at it, the        progress you will make.

A. harder; more  B. harder; great  C. harder; greater D. more hardly; more

【回答】

C

知识点：形容词比较级

题型：选择题