I spent ________ time doing the job, but I didn’t do any better than he．
A．as twice B．twice much C．twice much as D．twice as much
This new kind of chemical will help keep the air, soil and water________ from pollution．
A．empty B．loose C．free D．short
You ________ worry about it , as everything has been settled now．
A．shouldn’t B．needn’t C．can’t D．mustn’t
I fixed my eyes upon the newcomer, wondering whether I ________ him somewhere before．
A．saw B．has seen C．had seen D．would see
________ worries me a lot is that I keep forgetting what I have just done．
A．As B．What C．That D．It
Remember to ________ a good state of mind even if you should fail plenty of times．
A．take up B．brush up C．get up D．keep up
