Your sofa is nice.—__________.

There are signs that there is a growing tendency for people to turn away from ________ western medicine to alternative methods of treatment.

Look, Mr Green is on the other side of the street.— It _____ be him.He has gone to London on business.

My parents are strict _________ their work and they are also very strict ________ me.

In face of failure, it’s the most important to _______ a positive state of mind.