_______ human beings use it in a wrong way, like we did with nuclear technology, the advancement of science and technology has never led to decline of human development.
. The conference gives a chance for people of different _________ to exchange.
I haven’t seen you for a couple of days. What have you been up _________?
–---What do you want to do next? We have half an hour until the basketball game. -----________. Whatever you want to do is fine with me.
I can understand _________ to live alone and be independent.
We wanted to get home before dark, but it didn’t quite _________ as planned.