SCIENTISTS ARE LOOKING FOR AN...WAY TO REDUCE ENERGY CONSUMPTION. (...

4/ - DE KIEM TRA HKII TIENG ANH 9
Lớp 9 Tiếng Anh DE KIEM TRA HKII TIENG ANH 9

4/ Scientists are looking for an...way to reduce energy consumption. ( effect /

affection / effective / effectively )