【2011陕西卷,13】As is known to all, People’s Republic of China is biggest developing country in the world.
_____ is necessary for us to tell him about the result.
Mrs Chen is very strict — we don’t dare to say a word _____ she asks us to.
– The lecture will begin at 4 o’clock in the afternoon, right? – Yeah, ____ you get there on time.
– Tom has made great progress in spelling. – So he has and _____.
The mayor will go to Beijing by train _____ by air.