一、单选题（每题1分，共15分）
（ ）1 He used to be in prison for some time in his twenties.
A. a B. an C. the D. /
（ ）2. The thief _________a house through the window but was caught at last.
A. broke into B. broke in C. broke down D. broke out
（ ）3. I will remember the farmers_______ have had a great influence on my life.
A. who B. which C. they D. whose
（ ）4. We all believe that the murder _________ early in the morning.
A. took place B. happening C. was happened. D. was taken place
