Question

【题目】Can you tell me ______?

A. when did it happen B. when it happened

C. when was it happened D. when it was happened

Answer 1

【答案】B

【解析】

句意：你能告诉我它是什么时候发生的吗？happen“发生”，无被动语态，排除C,D；此句是when引导的宾语从句，从句应该用陈述句的语序，故答案选B。