The boys in that school are better at playing football than basketball.

问题描述:

The boys in that school are better at playing football than basketball.
这四个答案能代替are better at 的是A.had better B.work harder at C.do better in D.are more interested

c是完全正确的,因为do well in与 be good at 是同义词,句中是他们的比较级用法