英语必修4外研版作业（08）及答案解析 section c vocabulary, and listening， evertday english，function & reading and writing 单项选择 1.—is it barbara who is near the window? —it be her. she has gone to beijing. a. mustn’t b. shouldn’t c. may not d. can’t 2. —everybody in the city is very careful about the flu. —of course. , they will be infected with it.
