We are taught that business letters should be written in a formal style           in a personal one.

The guide told us that he would organize some business men abroad＿＿＿next week. 

Don’t talk round the question; come             to the point.

—Timmy, it is raining heavily out. Shall we stop here?—_______, we must finish this work today.

He’s only 17 and____not eligible to vote.