The government doesn’t know how to deal with the dangerous situation________all the public are aware of at present.

Do you like chatting with your friends on the telephone or MSN—_______. I use QQ.

s not an economical way to get more water; , it is very expensive.

You’ve made great progress in your studies of English, haven’t you? –Yes, but much ______.

Can you tell me ___________? – An engineer from Jinan Iron and Steel Plants．