1. I can still remember the sitting—room______ my mother and I used to sit in the evening.
A. what B. which C. that D. where
2. All ____ is needed is a supply of oil.
A. the thing B. that C. what D. which
3. In the dark street, there wasn’t a single person _____ she could turn for help.
A. that B. who C. from whom D. to whom
