Oct. 1st, ____ is our National Day, is celebrated with singing and dancing.
. ___________is hard is to do good all one's life and never do anything bad.
. —What are you busy with? —The conference___________in our city next week, as you know.
. Just because they make more money than I do, ___________they seem to look down on me.
. —I’ve never found a better job and I’m so glad. —___________.
. —Have you seen___________pen? I left it here this morning. —Is it___________black one? I think I saw it somewhere.