24 shall we go to school by bus tomorrow a. That’s a good idea b. why? How come? c. I don’t mind d. Using public buses can avoid traffic jams 22 it will be better if people take advantage of solar power to save energy a. Absolutely! But it won’t happen b. I’d like to use public transportation c. That’s exactly what I think d. How can we save energy? 12 parents shuold take their children’s requests for sunglasses seriously .......... eye protection is necessary in summer weather a. Because b. Unless c. If d. So that 11 electricity and water are considered the .................... of modern life a. Necessities b. Needs c. Necessity d. Necessary