—You look so young. Haven’t you graduated from your university?—Yes, I________in the English Department of Shandong University for four years.
It was in the small house _______ was built with stones by his father _______ he spent his childhood.
--- How often do you eat out? --- _______, but usually once a week.
How I was _______when I heard the _______ news!
_______, a learned man makes fewer mistakes in life than a man without knowledge.
They made a scientific approach ______ the subject.