I think you must be mistaken about seeing him at the theatre； I’m sure he _____ abroad all week.
| A．is | B．was |
| C．has been | D．had been |
Professor Williams keeps telling his students that the future________ to the well-educated.
| A．is belonging | B．is belonged | C．belongs | D．will be belonged |
There is no doubt _______ my friend is not satisfied with what they have done.
| A．that | B．whether | C．if | D．why |
We should learn from those _____ are always ready to help others.
| A．who | B．whom | C．they | D．that |
Friends should be_____ about each other’s feelings.
| A．crazy | B．hidden | C．concerned | D．worried |
He _____ a Party member last year.
| A．joined | B．joined in | C．took part in | D．became |