YOU SHOULD _____ AN ORDINARY 100-WATT LIGHT BULB WITH AN ENERGY -S...

56. - TRAC NGHIEM ANH 9 HKII 2
TRAC NGHIEM ANH 9 HKII 2

56. You should _____ an ordinary 100-watt light bulb with an energy -saving one .

A. replace

B. change

C. select

D. replay