英语作业给下正确答案！

16：He was very nervous, but he answered all the questions in a _____ voice.1.quiet 2.silent 3.calm 4.palm 17：Americans may ask you some personal questions when you first know them. In this way, they can get better ______ with you and have a topic for beginning conversations with you.1.acquainted 2.acquainting 3.acquaint 4.to acquaint 18：The study claimed that violence on TV _________the minds of children.1.projects 2.corrupts 3.impacts 4.promotes 19：By the time this talk is over, we _____ a lot about the earth1.shall be learning 2.would learn 3.are learning 4. shall have learnt 20：In film Cast Away. Tom Hanks plays man named Chuck Noland.1. a; the 2.the; a 3.the; the 4.a; a