Many scientists _______ all their lives to working out answers to problems.
The phrase "keeps sellers on their toes" in the passage mostly means "______".
_______ has been a topic of continual geological research.
There has been a great increase in retail sales,_____________________ ?
Standing on the tip of the cape,____________________ .
The examination was not very difficult, but it was_____________________ long.
The packages___________________ so that it would be easier to carry them.
She asked me______I was looking at.
As a millionaire who liked to show off her wealth, Mrs. Smith paid______________________________________________ we asked.
Stephanie: "Oh, no! I left my book at home. Can I share yours?" Scott: "______ "
We must push the piano to the corner of the hall to_____________________ our party tonight.