I still remember the sitting-room _______my mother and I used to sit in the evening．

（2014年北京市西城区高三5月二模试题）35. Paris has some great museums ______ visitors can see fine works of impressionist painters.

How often does he write emails to hisfriend-______.

Mr. ChD．would spend

Computers of this kind __________. They are out of stock (脱销) now.