I can spare you only a few minutes. Just tell me ____what happened.

A cough is usually nothing to worry about unless it lasts for ten days _____

One advantage of eating a balanced breakfast is ______ it can keep you energetic throughout the day. 

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

It’s true that the old road is less direct and a bit longer. _______, they don’t like to take the new  one.