I’m afraid I’m not _____to help with the talent show, for I am fully occupied with my own project.
-----Are you sure that the party came to ______ power in ______1960s? -----Yes.
Once new difficulties _____ in our new job, we should learn to use our brains to solve them.
He has written a book_______I have forgotten.
This is the best chance for you to go abroad. Don't ________.
---Have you ________? ---No. I had the wrong number.