After two years' research,we now have a ________ better understanding of the disease.(2013·全国Ⅱ)
— People should stop using their cars and start using public transport. — _____________. The roads are too crowded as it is.
______ final competitors is limited though _____ people have signed up for the short list.
I remember he lives in the room __________ window faces south.
____________ the weather has improved, the game will be held as planned.
Emergency line operators _______ always stay calm and make sure that they get all the information they need to send help.