With so many noises from the busy traffic in the street, I couldn’t______ and do my research work.
| A．put down | B．set down |
| C．cut down | D．settle down |
Don’t turn off the computer before closing all the programs, _____ you’ll have problems.
| A．but | B．and | C．so | D．or |
—Could you tell me what I said just now?
—Sorry. I ______ about the movie I watched last night.
| A．thought | B．had thought |
| C．was thinking | D．am thinking |
It’s kind ____ you to have given me so much help. Thank you ____ the bottom of my heart.
| A．of；in | B．for；in | C．for；from | D．of；from |
The information on the Internet gets around more rapidly than ____ in the newspaper.
| A．it | B．one | C．that | D．those |
The atomic weight of oxygen is_____than ______of the hydrogen.
| A．15 times heavier; that |
| B．15 times heavier: those |
| C．16 times as heavier; that |
| D．16 times as heavy; those |