题目

---Excuse me. I’m looking for Be the Best of Yourself.         ---Sorry. The book you ask for ______ out.         A. is selling        B. is sold             C. was selling     D. will be sold 答案：B    两队4天修完一条水渠，第一队修了160米，第二队修了136米．平均每天第一队比第二队多修多少米？