单选题 Do you know the reason _______ he left?

单选题 I can never forget the day _______ I got the first prize in the competition.

单选题 The audience, most of________ were students, enjoyed the performance very much.

单选题 He is the greatest man ________ has ever lived in that country.

单选题 That’s the man ________ I sold the car to.

单选题 The child ________ parents died in the air crash is living with his aunt now.

单选题 The garden of his house has a lawn, ________ is very pleasant to sit on in summer.

单选题 This is the house ________ I lived ten years ago.