题目内容：

Do you know________ she is arrived? A. if B. when C. what
答案给的是A B不对吗? 什么时间到达的?

优质解答

Do you know if she has arrived?你知道她是否已经到达了吗?
B改为：Do you know when she arrived?你知道什么时间她到达的?这样才正确