After listening to the teacher’s explanations, John ____ what he had done was wrong.
When I got off the crowded bus, I found my pocket _____ and the disk in it with the important documents gone.
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.