My mother could tell that my sister was not lying ________ the fear in her voice.

What did you see— I saw many boys________ games near the river.

____ do you study for a math test —Istudy math ____ lots of exercises.

Only when the European countries’ financial system broke down_____ to take measures to deal with those problems.

The students should________ to choose their own clothes. It will be a good way _____ themselveshappy.