—Thanks a lot for telling us about the history of the plants, Dr. Brown!
—________. And welcome to the nature park again!
A.Good job! B.Good luck! C.My pleasure. D.It’s hard to say.
My father goes to work either by bike or by bus. He says they’re ________ green ways.
A.both B.neither C.all D.none
—Mike, ________ quiet in the library, please! That’s the rule.
—OK, I got it.
A.keep B.don’t keep C.keeping D.keeps
—I failed the test because of too many ________ mistakes.
—So you must be more careful next time!
A.homeless B.careless C.meaningless D.useless
—How old is your elder brother?
—________. You know, he was born in the last year of the 20th century.
A.Twenty-one B.Twenty-five C.Thirty-one D.Thirty-nine
Many children like ice cream because it ________ sweet and cool!
A.looks B.sounds C.smells D.tastes
