.I’m sorry, but I had no alternative. I simply ______ what I did.a. must do b. had to do c. ought to have done d. have to do
Little ______ that we were watching his every move,so he seemed to be going his own way in this business.
When the woman was told that her husband had a car accident, her mind _____.
Color-blind people often find it difficult to _____ between blue and green.
Scientists say it may be five or six years ______ it is possible to test this medicine on human patients.
If you commit a crime, you will ____ punishment.