_____terrible weather we’ve been having these days!
| A．How a | B．What a | C．How | D．What |
The professor gave orders that the test ___________before 5:30.
| A．be finished | B．will finish | C．will be finished | D．shall be finished |
The possibility of a way out of the impasse(僵局) had never ____________ to anyone.
| A．happened | B．occurred | C．appeared | D．flashed |
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 |