Don’t waste your time in your holiday. Try to find _______ useful to do.

Many firms give away small quantities of theirproductions as _______ so that people can try them before buying.

The old woman who______in the deserted house alone forten years has been settled in a nursing home now

The light in his room is still on. Do you know _________— To prepare for the coming exam， I think.

The Chinese are good at table tennis ___________the English are interested in football