last-with-to-save-for-cost
SAVING ENERGY
For most North American households, lighting accounts(1)................. 10 percent to 15 percent of the electricity bill. However, this amount can be reduced by replacing an ordinary 100-watt light buld(2)........... an energy-saving buld. These bulds use a quartar of the electricity of standard bulds and(3).............. eight times longer. Therefore consumers can(4)............... about U$$7 toU$$21 per buld
last-with-to-save-for-cost
SAVING ENERGY
For most North American households, lighting accounts(1).....last............ 10 percent to 15 percent of the electricity bill. However, this amount can be reduced by replacing an ordinary 100-watt light buld(2)......to..... an energy-saving buld. These bulds use a quartar of the electricity of standard bulds and(3)........for...... eight times longer. Therefore consumers can(4).......cost........ about U7toU7toU21 per buld
