I was so busy last year that I was almost mad. So I spent _______ I had with my family last month after I finished the project.
Some researchers believe that there is no doubt ____ a cure for AIDS will be found.
Don't panic; just ______ the rock and I'll come and fetch you down.
With a lot of difficult problems ____, the newly -elected president is having a hard time.
---May I have a word with you? ---______. I'm not busy, anyway.
The experts suggested the problem worth paying attention _____ at the meeting.