People in Lanzhou are glad that a modem subway in several years.

A hard-working man__ _______become a great scientist, but a great scientist__________be a hard-working man.

Can you tell me________is the best choice for this job? —Well, I think George may be the one

Steven, can you help me buy some meat— ___，I like shopping.

________ you have the drug habit, you’ll find it hard to get rid of[ ]