新概念英语第二册习题（无答案）Lesson 41-Lesson 42.doc

新概念英语2 Lesson 41 Do You Call That a Hat? 你把那个叫帽子吗？ I. 语法与词汇知识 1. You ______ have watered the flowers because it might rain soon. A. need B. need not C. need to D. need not to 2. You ______ pay the bill, but you needn’t do so at once. A. must B. mustn’t C. shall D. have n