—You didn't wait for Mr. Smith last night, did you?—Yes, but we ________. He didn't return home at all.
His study was a mess with lots of books and magazines __________up everywhere.
--Oh, I __________my passport! --Don’t worry. We have time to go back home and get it.
While looking for some personal documents, I happened to see an album __________some old photographs.
It is more important than ever to develop one’s maths, science and computer skills _______technological change is accelerating.
_______ patient when you argue with someone who is not so reasonable.