He needs to ______ the room.A. clean B. clean C. cleaning
My friends are very________to me.
Remember not to speak________when we are in the reading room.
—________ we ask you some questions? —Sure, go ahead!
—________ I finish the work today? — No, you ________.
This book ________ Lucy’s. Look! Her name is on the cover. A. can’t be B. may be . mustn’t be D. must be