John ____________ his students is playing basketball on the playground

have to hand in our research reportsthis afternoon, Professor Smith— Yes, you _______ I will be waiting to check themall the afternoon

orkers risked their lives to restorecommunications in the disaster-stricken areas , which were cut off______thepowerful earthquake .

下列各句中，没有语病的一句是(　　)

What do you think of the song You and Me—It sounds ______. I like its words very much.