基本信息
module 4 a social survey—my neighbourhood period two grammar：present perfect tense 同步精练（外研版必修1，课标通用） 时间：40分钟 ⅰ.短语填空 1. if you want to know it more clearly，he can give you________examples. 2．the flight leaves in thirty minutes.we'll never__________. 3．we haven't had enough experience about this kind of disease________.
