—What’s Jack up to in the shoe shop? He’s there for ages.—It’s ______ that he hasn’t decided which pair to buy.

My grandfather is as______as a young man and hates sitting around doing nothing all day.

No matter what happens, you should keep _____. Just look on the bright side of things. 

Glass is _______ and must be handled with great care.

Would it be ___________ for you to pick me up at four o'clock and take me to the airport?