Tìm số có hai chữ số biết nếu viết thêm chữ số một vào trước và sau số đó thì được số mới gấp 23 lần số đã cho.

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1. Vietnam, _________is in the south-east Asia, exports rice coffee and rubber. A. who B. that C. which D. where 2. They are the children __________won the match yesterday. A. whose B. whom C. who D. they 3. They live in the house _______ they bought last year. A. whom B. which C. where D. whose 4. The girl ______ you met yesterday is a famous pop singer. A. whom B. whose C. what D. which 5. It’s going to rain in Canberra, ____________ is the capital city of Australia. A. which B. where C. that D. when 6. The man _________you met on Main Street yesterday is your new teacher. A. which B. when C. whose D. who 7. That’s the house _________Shakespeare was born. A. which B. that C. in that D. where 8. The scientist _________discovered a new planet has won the Nobel Prize. A. which B. what C. who D. whom 9. The book _______ is on the table belongs to my teacher. A. who B. it C. which D. where 10. He invited us to the house ________ he was born and grew up. A. which B. that C. who D. where 11. I have a friend _____ran in the New York Marathon last year. A. which B. who C. whom D. whose 12. The Southam Chess Club, __________has more than 50 members, meets weekly on Friday evening. A. that B. which C. who D. where 13. Dr Rowan, ______secretary resigned two weeks ago, has had to do all his own typing. A. who B. that C. whose D. Ø 14. The film is about the lives of three women, all of them ______are played by Kate. A. who B. that C. them D. whom 15. This is the painter ___________picture you admire so much. A. who B. whom C. whose D. which