難度:★  考點:動詞時態(tài)的用法
	
	  1.In order to make our home town more beautiful , trees_______ around the city every year.
	
	  A.plant   B.are planted   C.will plant
	
	  2.If Bob______away from the junkfood,he will be in good health
	
	  A.stay  B.will stay  C.stays
	
	  3.Lucy______a student last year,but now she______a teacher.
	
	  A.is;is   B.was;is   C.was;will be   D.is;was
        
