I. Cho dạng đúng của từ trong ngoặc để hoàn thành câu. (5 điểm) 1.You should spend your money and energy as as possible. (economy) 2.You can buy a lot of waste made from this factory. (produce) 3.This library is open to all . (read) 4.Air and water are in our life. (necessary) 5.My brother can repair electric very well. (apply) 6.These will conserve the earth. (innovate) 7.Since the world’s energy resources are limited, we must them. (conservation) 8.We suggest the light bulb. It is broken. (replacement) II. Chọn đáp án đúng để hoàn thành câu. (5 điểm) 1.Oh dear ! How ___________________ our household bills are! We can’t pay them. A. heavy B. enormous C. small D. low 2.In winter, heating __________________ for 50 percent of our electricity bill. A. takes B. occupies C. accounts D. costs 3.Energy can be collected by solar _______________ on cloudy days. A. boards B. panels C. bars D. sheets 4.If we don’t find __________ sources of power, we will use up all the fossil fuels in the near future. A. effective B. efficient C. natural D. alternative 5.We want to use solar energy, _________________ it cannot be used on cloudy days. A. but B. so C. because D. however 6.Are wind power ______________ solar power new kinds of energy for future use? A. and B. or C. with D. but 7.He is always broke. He can afford neither luxuries ______________ basic necessities. A. or B. nor C. and D. but 8.Her husband bought not only two energy-saving light bulbs but _______________ one cheap washing machine last Sunday. A. also B. too C. as well D. some