189. I tried to ____ in my speech we were all grateful for his help.
More than 800,000 Chinese overseas students have returned in the last five years, with the annual number ______ by an average rate of 36 percent each year.
For most informal dinners, you should wear comfortable and ______ clothes.
Johnson would have faced the music but he ______ doing things like that.
How can they learn anything ______ they spend all their spare time watching television?
In this section, we will briefly describe possible ways of reducing the costs and risks ______ in doing this.