33.It was not until one night_____we were doing our cleaning-up I got curious and wanted to see what was on the top floor.
–Did Ken take the job in the bookstore? –No, but I think he _____.
He _____ more than thirty.
A computer _____ think for itself; it must be told what to do.
You _____ to eat if you don’t feel like it.
How _____ you say that you really understand the whole story if you have covered only part of the article?