Fill in the gap people need to breathe

PEOPLE NEED TO BREATHE .IF THEY DON'T BREATHE ,THEY (1) ............. DIE.BUT HOW CLEAN IS THE AIR PEOPLE BREATHE ? IF THEY BREATHE (2) .............AIR ,THEY WILL HAVE BREATHING PROBLEMS .PLANTS AND ANIMALS  NEED (3)................AIR TOO .A LOT OF THE THINGS IN OUR LIVES CREATE HARMFUL GASES AND (4) ...............THE AIR DIRTY ,LIKE CARS ,MOTOBIKES ,AND  FACTORIES .DIRTY AIR IS CALLED POLLUTED AIR. AIR POLUTION CAN ALSO MAKE OUR EARTH WARMER
 1.  A.WON'T    B.ARE    C.MUST         D. WILL
 2.A.CLEAN   B.FRESH     C.DIRTY     D.CLEANER
 3.A.CLEAN    B.SAFE   C.DIRTY    D.POLLUTED
  4 A.MAKE     B.GET     C   GIVE     D. MADE
MY FATHER FIRST ..........DA LAT IN 2010
  A.VISITED   B. WENT    C.GO      D.BEEN
IF THE WEATHER ......GOOD,I......CAMPING  WITH CLASSMATES
 A.IS/WILL GO       B.IS/GO      C.WILL BE /GO     D.WILL BE/WILL GO