—Why weren’t you at the meeting?
—I____ for a long distance call from my sister in America.
| A．was waited | B．was waiting |
| C．has waited | D．have been waiting |
In my opinion, your composition is not as interesting as his but yours is ________ in writing.
| A．the best organized | B．better organized |
| C．so organized as | D．as organized as |
---We all had a lot of fun at the barbecue yesterday. Pity you weren’t there.
---I really should have gone with you, but I ________ on some remaining problems.
| A．was working | B．would work | C．worked | D．had worked |
If you want to study the nature of the universe, first of all, you must be clear about its ________.
| A．traditions | B．consequences | C．signs | D．origins |
---Do you think I can pass the test?
---________, I’m afraid.
| A．You can | B．Of course | C．Not a chance | D．A little bit |
________ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunrise.
| A．Freed | B．Freeing | C．To free | D．Having freed |