-Hereallyworkedhardathisstudythismonth.   -Yes.That's

问题详情：

-He really worked hard at his study this month.

    -Yes. That's_______ he did better in his maths test.

    A. because          B why                C. what              D. how

【回答】

B

知识点：相似 相近词比较

题型：选择题