There are millions of websites on the Internet and there _________ a lot of useful ________ on the websites.
| A．are;informations | B．are;information |
| C．is;information | D．is;informations |
—Did you notice a boy in blue come in?
—No , I didn't because I ______ a movie.
| A．had watched | B．have watched |
| C．was watching | D．am watching |
—Do you like playing computer games?
—No, but I ______ .
| A．didn't use to | B．wasn't used to |
| C．was used | D．used to |
Don't let yesterday ______ too much of today.
| A．put up | B．use up |
| C．look up | D．get up |
Most people have realized the ______ of protecting the environment.
| A．success | B．importance |
| C．experience | D．experiment |
Peter is honest boy and______ good friend of mine.
| A．an; a | B．a; the | C．the; a | D．a; an |