问题

I didn’t know you were friends with Mr. Smith. — We ______ each other for6 years.
A:knew
B:are known
C:have known
D:will know
B:are known
C:have known
D:will know
正确答案是:
同类题型
What did the teacher_____ Mary to_____ at the meeting yesterday?[ ]
After class, I like playing computer games and chatting ______ my friends ______ the Internet. [ ]
Don’t worry about me too much, mom. I think I’m __________ to finish the work by myself.
Kids, help ______ to some apples, please. — Thank you very much.
What ____ you ____ when the phone rang?–I was washing my hair in the bathroom.