s section, we will briefly describe possibleways of reducing the costs and risks ______ in doing this.

If better use is _______ of your spare time, you’ll make great progress in your study.

You can never be________careful，the road is icy and slippery

More than one hundred teachers work in our school, and most of _____are from countryside.

How about having _______dinner at Mike’s—It sounds great. Mike is _______ wonderful cook.