Young as she is, Lily has gained _____ rich experience in _____ society.
It is the educational system, rather than the teachers, _______ is to blame for the students’ heavy burden nowadays.
---- Did he come back early last night? ---- Yes. It was not yet eight o’clock _______ he arrived home.
After a few days together, they got to the point _______ they could read each other’s thought.
________ I want to know, sir, is whether you have any goods in that bag _______ I should know about.
The rate of racial progress varies in different areas of the country, but in the past ten years _________ more improvement.