The company had about 20 notebook computers but only one-third __________ used
regularly. Now we have 60 working all day long.
| A．is | B．are | C．was | D．were |
It was strange that he _____ have uttered such rude remarks on that occasion.
| A．must | B．could | C．should | D．would |
The organizers announced that the first ______ at the top shall receive a big prize.
| A．arrived | B．arriving | C．to arrive | D．arrives |
Thanks a lot for the trouble you ______ to help us.
| A．took | B．put | C．made | D．had |
It is now generally believed that a good teacher should be ______ to his/her students.
| A．convenient | B．adequate | C．accessible | D．suitable |
After losing one of his legs in the accident, we can imagine that he will have a lot of difficulties to overcome in the years ______.
| A．following | B．followed | C．to be followed | D．to follow |