He usually watches TV______ Saturday evening.A. on B. in C. at
I'll write a letter to you ________ I arrive in New York.
I told him the news ________he came back yesterday.
—Ring me up ________ you come to my house, will you?—Sure, I will.
You will fail the exam ________ you work hard.
Zhou Libo is Shanghai's favorite funny man. He is good at making people laugh. His lively shows were ________ hot that tickets were sold out in minutes.