求新编实用英语综合教程2的课后答案 ~~

选词填空 一单元 1.but in this instand 2.often present 3.we thanked our hostess 4.comments were appropriate 5.did't invent 6.have to entertain 7.very explicit 8.can identify 三单元 1. be aburden 2. new advances 3. felt lonely 4. music is i