（ ）1.There will be ____pollution and _____trees in the future.
A. more,much B.less,many C. less,more
（ ）2.The old man lives in a _____ house _____.
A.lonely ,alone B. alone, lonely C.lonely,lonely
（ ）3.There are ____ of students in the school, but only ____of them are girls.
A. hundreds, two hundred B. hundred ,two hundreds C. hundreds, two hundreds
