[词汇搜索]

1.节约能源 ________________ 2.用……做成 ________________ 3.使用太阳能 ________________ 4.流行起来 ________________ 5.生活在地下 ________________ 6.总之 _________________________

save energy

be made of

use solar energy

become popular

live underground

in all/in conclusion/in a word