急寻新编实用英语综合教程2（第三版）课后的习题答案拜托啦

选词填空一单元1.but in this instand2.often present3.we thanked our hostess4.comments were appropriate5.did't invent6.have to entertain7.very explicit8.can identify三单元1. be aburden 2. new advances 3...