Mark the letter A, B, C or D to complete the following sentences: 6. My grandmother, …………… is eighty one, goes swimming every day. A. which B. whom C. whose D. who 7. That is the worst picture………… I’ve ever seen. A. whose B. that C. who D. which 8. I didn’t finish work until after 10:30, ….everybody else had already gone home. A. in which time B. in which case C. by which point D. by which time 9. There was no one in the control room at all, ……made me suspicious. A. the which B. the what C. which D. that 10. There is one person here tonight to……I owe more than I can ever say. A. which B. whom C. whose D. that 11. At the beginning of the second half, Vietnam scored their second goal,….. Laos gave up completely. A. at that point B. until when C. at what point D. at which point 12. The waitress…….. served us was helpful and charming, so we left a big tip. A. what B. which C. that she D. who 13. Why do you blame me for everything………… goes wrong? A. that B.it C. what D. who 14. Those are boys and dogs……we saw on the way. A. who B. that C. whom D. which 15. She tried several jeans, none of….. fitted her. A. whom B. whose C. of which D. which 16. Before I came to England, I hadn't had the opportunity to speak to people ……. native tongue is English. A. their B. whose C. who D. whom 17. There are some teachers in our school ….try to improve the quality of teaching by making use of hi-tech devices. A. who B. which C. whom D. whose