She is a woman of great knowledge, _______ much can be learned.

_ you keep on practicingEnglish, I’m sure you will be able to speak itfluently.

The professor, ____ some of his assistants , _____ to attend our discussion.

The boss ______ the worker how to do it, or the accident couldn’t have happened.

What’s wrong with the girl I saw her runout of the room with her face ____ in her hands