—What's your name?— A.I'm Chen Jie. B.I'm four years old.
It ______ warm yesterday.A. is B. was
The children ran away. _____ I cried.A. so B. Then
Chinese people invented paper _____printing.A. and B. but
Yesterday I ______ my room.A. clean B. cleaned
Thank you _______ your letter.A. for B. to