I ______ the time ______ so quickly.
| A．didn’t realize; had passed | B．don’t realize; passed |
| C．haven’t realized; passed | D．hadn’t realized; had passed |
To enjoy the scenery, Sara would spend long hours on the train ______ travel by air.
| A．as to | B．other than | C．instead of | D．rather than |
The audience ______ when they heard the humorous story.
| A．burst into laughing | B．burst out laughter |
| C．burst into laughter | D．burst in laughing |
—I’m sorry．That wasn’t of much help．
— Oh, _______ . As a matter of fact，it was most helpful．
| A．sure it was | B．it doesn’t matter | C．of course not | D．thanks anyway |
— What about ______ lecture you attended yesterday?
— To tell the truth, it was too boring．I can't stand ______ lecture like that．
| A．a; the | B．the; a | C．the; 不填 | D．the; the |
_____the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
| A．If | B．While | C．Because | D．As |