1/Energy supplies can be___ by____(extend/conserve)
2/____of high quality always please customers(product)
3/What can we do____energy?(conservation)
4/Tom, remember to use energy more___(efficient)
5/____used cans and bottles is a good way to economize(recycle)
6/John's bad result make his parents___(disappoint)
7/We can protect environment by___air___( reduction-pollute)
8/ enerngy-saving bulbs should be used to save ______(electric)
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Sinh Học lớp 12
