When you decide to start a family, you make a/an ______ to them. You shouldn’t turn your back on the people who love you.

If you stand here, you'll get a better          of the river.

Only by seizing every possible_____ to practice can you possibly hope to improve your spoken English.

All the traveling ______ are paid by the company if you travel on business.

I know that our geologists think highly of his researches in the ______