Everyone in the class is expected to________in the discussion.

I enjoy the street dance “hip-hop”, but _________ myfather _________ my mother likes it.

I’m sorry to keep you waiting for me so long.—_______

Alice,have you accepted the job in that company—Oh,yes.It’s quite near and the good pay makes their offer even more to me.

(2013·安徽，21)From space, the earth looks blue.This is ________about seventy­one percent of its surface is covered by water.