Try on this red skirt; you will look great _____it.
In this experiment, they are woken up several times during the night, and asked to report what they__.
When he was alive, the old scientist used to say that knowledge __from practice and he gained his experience by doing a lot of practical work.
He __articles for our wall-newspaper these three years, and he __about forty articles.
The children __very quiet;I wonder what they __up to.
Jim talked for about half an hour yesterday. Never__ him talk so much.