定语从句专项 1. Don’t talk about such things of _______ you are not sure. A. which B. what C. as D. those 2. Is this the factory __________ you visited the other day? A. that B. where C. in which D. the one 3. Is this factory __________ some foreign friends visited last Friday? A. that B. where C. which D. the one 4. Is this the factory __________ he worked ten years ago? A. that B. where C. which D. the one 5. The wolves hid themselves in the places ____ couldn’t be found. A. that B. where C. in which D. in that 6. The freezing point is the temperature ____ water changes into ice. A. at which B. on that C. in which D. of what 7. This book will show you _ can be used in other contexts.. A. how you have observed B. what you have observed C. that you have observed 8. The reason is __________ he is unable to operate the machine. A. because B. why C. that D. whether 9. I’ll tell you __________ he told me last week. A. all which B. that C. all that D. which 10. That tree, __________ branches are almost bare, is very old. A. whose B. of which C. in which D. on which 11. I have bought the same dress __________ she is wearing. A. as B. that C. which D. what 12. He failed in the examination, __________ made his father very angry. A. which B. it C. that D. what 13. We’re talking about the piano and the pianist __ were in the concert we attended last night. A. which B. whom C. who D. that 14. The girl ___ an English song in the next room is Tom’s sister. A. who is singing B. is singing C. sang D. was singing 15. Those __ not only from books but also through practice will succeed. A. learn B. who C. that learns D. who learn 16. Anyone ____ t...
