I.      Rewrite sentences as directed.

1. Whose book is this?

Who ...................................................................................................................?

2. How much is that pen?

How much does............................................................................................... ?

3. How heavy are you?

How much .......................................................................................................... ?

4. Lam is Mrs. Hoa‟s son

Mrs. Hoa ............................................................................................................. ?

5. Mr. Ba is the owner of this house.

This house........................................................................................................... ?

11.​................. are you doing? - I’m reading a book. A. Whom​B. Who​C. Whose​D. What 12. ................. coffee is this? – It’s mine. A. Who​B. Which​C. Whose​D. What 13. ................. of these problems are you most interested in? A. Who​B. Whom​C. Which​D. What 14. ................. do you know about this subject, and who taught it to you? A. Which​B. Who​C. What​D. Whom 15. ................. is responsible for the accident? A. Whose​B. Who​C. Which​D. Whom 16. ................. can be an excellent source of free, renewable energy for poor farmers. A. Turbine​B. Biogas​C. Solar panel​D. Bulb 17. The government has warned that Britain will face power ................. in the coming winters. A. coal​B. shortages​C. slogans​D. energy 18. Wind power is one of the earliest ................. sources of energy used by humankind. A. alternative​B. polluted​C. harmful​D. exhausted 19. Nobody can predict exactly when supplies of fossil fuels will be ................. However, we all know they quickly reduce in quantity. A. installed​B. polluted​C. harmful​D. exhausted 20.​Biogas can be used to ................. natural gas in cooking, heating, or electrical generation. A. use up​B. replace​C. pollute​D. install

1)It’s this computer program ______ my father created.
(that / whom / who / what)
2)Mine is the one ______ has a green luggage bag.
(what / whom / who / that)
3)The CD ______ Victor bought is on the table.
(whose / that / who / whom)
4)“______ films are you talking about?” “Gone with the wind.”
(That / Which / Who / Whose)
5)The book ______ we discussed was a best-seller.
(which / who / whom / whose)
6)How about the shirt ______ you wore Saturday night?
(which / whom / who / whose)
7)The person ______ wallet is missing should report to the office.
(which / whose / who / that)