Henry must have stayed up last night, ________ he looks so tired and sleepy.
Does this meal cost $50? I _______something far better than this!
At minus 130℃, a living cell can be ______ for a thousand years.
If we can ____ our present difficulties, then everything should be all right.
.If the firms failed to make enough money, they would __________.
.Emergency line operators must always ______ calm and make sure that they get all the information they need to send help.