ADMICRO

Khoanh tròn vào đáp án đúng nhất trong số (A, B, C hoặc D) để điền vào chỗ trống trong đoạn văn sau. 
Electricity is the (0) _________ common form of energy used today. (1) _________ the modern world, (2) _________ is instantly available at the touch of a switch. Electricity has numerous uses. The most common use of electricity is to provide artificial lighting. In factories, electricity is used to (3) _________ the electric motor of machines. In offices, electricity is used to light up (4) _________ workplace. It is also used to operate air-conditioners, computers (5) _________ many other machines.

3_________

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ZUNIA12
ZUNIA9
AANETWORK