Our office has recently_____to a new computer system.（2011-66)A．alteredB．convertedC．transf

Our research has focused on a drug which is so ______ as to be able to change brain chemis

If you wish to go away for the weekend, our office will be delighted to make hotel______.A

Our English teacher has agreed to _____ the time limit for our paper.A. spreadB.

Recently a world plan to attack illiteracy has been ______ by a committee of UNESCO expert

Only recently______to realize the dangers caffeine（咖啡因)might bring to our health.A．that

Any claims for refund or ________ must be made in writing to our head office within 28