Every man worker and every woman worker _____ free medical care. At Christmas each boy and each girl ___ given a present.
| A． enjoy; is | B． enjoy; are |
| C．enjoys; are | D． enjoys; is |
I appreciated ____ the opportunity to study abroad two years ago.
| A．having been given | B．having given | C．to have been given | D．to have given |
_______, I’d have told you.
| A． If I would have known | B． If I had have known |
| C． Had I known | D． Should I know |
20. He reads newspapers every day to keep himself_______about what's going on in the world.
| A．inform | B．informing | C．informed | D．being informed |
We_______such great progress without your efforts. Thanks a lot.
| A．shouldn’t have made | B．couldn’t have made |
| C．were unable to make | D．mustn’t have made |
Our success was largel_______the good cooperation of all team members.
| A．because | B．result from | C．due to | D．thanks to |