企源知识库

It is because Chinese is very useful ( ).
A、that we study it very hard
B、why we study it hard
C、what we study it hard
D、which we study it hard
【正确答案】：A
【题目解析】：强调句型，强调的是原因状语，it was because…. that,句子含义是正是因为中文很有用，我们要努力地学习。