. Does the price include breakfast only, or dinner ___?

Carl wanted to play a joke on Bob but gave himself _____ by laughing.

Progress so far has been very good．We are,    __, confident that the work will be completed as expected．

—You don’t seem to be quite yourself today. What’s wrong? —Oh, I’m suffering from a cold. Nothing serious, _____. 

When we sleep is      cultural as biological-and practices differ greatly round the globe.