—Michael, you have ____ a lot of weight recently.—Yes, I was 62 kg a year ago, but now I’m 73 kg.
--Would you mind passing me the book? --________. Here you are.
--How long have you read this book? --_________________.
--Where is your father? --He ________ Shanghai. He’ll be back next week.
There is nobody in the room,________?
Tom asked my friend ________.