1. She is a women of rich knowledge, _______ much can be learned.
A who B that C from which D from whom
2. It took me some time to ________what was causing this.
A. break out B. work out C. carry out D. give out
3. That’s the factory_____ we paid a visit last year.
A.where B.to which C.which D.in which
4. Rosa _____ this washing machine for more than ten years. She is thinking about buying a new one.
A has been using B. used C. had used D. is using
