—Honey,let’s go out for dinner.—________I don’t have to cook.
It seems that living green is __________ easy and affordable. A small step makes a big difference.
It was in the small house _____was built with stones by his father ____he spent his childhood.
__________ environmental damage is done, it takes many years for the ecosystem(生态系统) to recover.
I like this jacket better than that one, but it costs almost three times______.
Only when I left my parents for Italy __________how much I loved them.