The natural resources, such as mine, forest, and hydropower (水电)in that area have been __________.
_______, she is the sort of woman to spread sunshine to people through her smile
This classroom is __________ that one.
—What did you say to your sister? I saw her crying in the room. — It _________ my fault. I just said hello to her when I met her, nothing else.
—What about ____ book? —It’s too difficult ____ book for beginners.
Everyone in this country should work hard and do what they can _____ against national smog.