Read the following passage carefully and choose the best option to fit each space. Electricity is the most 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. 23. A. In B. Round C. During D. From 24. A. Gas B. water C. electricity D. coal 25. A. Driven B. drive C. driving D. drove 26. A. A B. any C. the D. many 27. A. But B. so C. because D. and