I ____come yesterday, but I couldn’t.
A. was to have B. must C. ought D. have to
If I _____out of my ink, I would have finished writing the paper.
A. didn’t run B. shouldn’t run C. haven’t run D. hadn’t run
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
