Last term our maths teacher set so difficult an examination problem _____ none of us worked it out.

The foreigners are ______ by the ________ progress that the Chinese have made.

The price of an iPhone 6 is very high.—- Yes. Good things always _________ much.

You didn’t wait for Mr. Smith last night, did you? —- Yes, but we _______. He didn’t return home at all.

Her new album ______last month and became a hit in no time.