— Jack, this is the third time that you have been late this week. — Sorry, sir, but I was ______ for 15 minutes on the way here in the traffic jam.
We can never expect ____ bluer sky unless we create _____ less polluted world.
The newly discovered star was named ___a Chinese astronomer ____ honor of his contributions to astronomy.
-----Good morning, Xueyuan Hotel. -----Hello, I’d like to book a room for the nights of the 14th and 15th. -----_______.
— How did you find the film Harry Potter and the Deathly Hallows? — ________. I can’t think too highly of it.
Would it be ________ for you to pick me up at four o’clock and take me to the airport?