Since I came to China I’ve known that about seven people _____ten speak Chinese[ ]

I couldn’t find Peter, did I know where he had gone[ ]

I don’t know the teacher ________is talking with Miss Wang．

_____ was the tea party last week—It was very nice.

I think I will recommend David as the chairperson of the club because he is .—I quite agree with you. He is always willing to share his things with others.