Are you a teacher— No, but I ________ in Quanzhou No. 3 High School for 3 years.

He has __________ little education that he can’t teach ____________little children

I’m going to the Century Mart.–______ you’re there, can you get me a bag of salt

In many American universities, the total work for a degree thirty-six courses, each for one semester(学期).

When did your brother begin to show his interest in medicine.—It was a Saturday _____ he noticed his classmate experimenting on a frog in the lab.