－Excuse me, are you andSimon in Class 2, Grade 7 － _________. He’s my classmate.

Do you like his joke-Not at all. ________.

下列各句中，划线的成语使用正确的一项是（ ）

On the annual International Volunteers Day, the world ______ the work of millions of people who give their time to help others．

1950s in the USA, most families had just one phone at home, and wireless phones _______ yet.