“(美国)全国篮球协会” 的英文缩略词是 .A.NBA B.BBC C.CBA
What can we students do _____ the environment?
—How long have you lived in this town? —_____ 2001.
There are five people in the room, but I know _____.
Don’t give up _____ you will never succeed.
Trees can stop the sand _____ towards the rich farmland in the south.