The World Wide Web is ____ computer network that allows ____ computer users to access information for millions of websites via the Internet.
| A．a, the, | B．a, / | C．the, the | D．the, / |
— Alice told me you called yesterday.
— Yes, I had a problem with Jane
, ___________I thought you could help me with, but you were not in.
| A．who | B．whom | C．that | D．which |
If anyone happens to drop in while I am out, _________ him or her leave a message.
| A．have | B．get | C．ask | D．tell |
With a lot of problems __________, the new government is now having a hard time.
| A．settling | B．to settle | C．settle | D．having settled |
Though I’ve tried very hard to improve my English, by no means ___________with my progress.
| A．the teacher is not satisfied | B．is the teacher not satisfied |
| C．the teacher is satisfied | D．is the teacher satisfied |
Science and technology have in important ways __________ the improvement of agricultural production.
| A．contributed to | B．resulted from | C．carried off | D．handed over |