— does it take you to go to work on foot? — About half an hour. A. How far B. How long C. How much
--- Look at ______ book on the desk . Is it ______ useful one ? ---Yes, it is . In the book there is much advice on how to learn math well.
---It seems that the kid is good at singing Beijing Opera. --- __________.
The doctor ____ the crying baby but couldn’t find out what was wrong with it.
---Must I hand in my exercise book now, Mr. Zhao? ---No, you ______. You may give it to me tomorrow.
Vera had to go to see her dentist ,for there was something wrong her ______. A. tooth B. arms D. hair D. feet