She ought to stop work; she has a headache because she ___________ too long.
I __________ very proud of myself after the quiz, __________ how easy it was and how I was sure to get a good grade.
—We are having a little party at the weekend. Can you and Mary come?— __________. Thank you. But I'll have to visit my grandpa.
Effective treatments do exist, but __________ they are very expensive.
Mr. Smith is very kind-hearted as well as responsible, so you are __________ to have such a good teacher as he is.
The boat sank quickly but __________ everybody was rescued.