读对话，在相应的表格内画对勾。
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
John ________ come to see us tonight, but he isn’t very sure yet.
粤公网安备 44130202000953号