9. Mary feels obliged to help her mom to do the household chores because she is ill. A. Mary has to help her mom to do the h

9. Mary feels obliged to help her mom to do the household chores because she is ill.
A. Mary has to help her mom to do the household chores because of her illness.
B. Mary must help her mom to do the household chores because she is ill.
C. Mary has to help her mom to do the household chores because she is tired.
D. Mary helps her mom to do the household chores because she is ill.
10. It is typical of the cultural life of _________ Thai people
A. Ø B. a C. an D. the
11. It is important for you to find the book to give back to Mary tomorrow.
A. You ought to not to find the book to give back to Mary tomorrow.
B. You mustnt find the book to give back to Mary tomorrow.
C. You can find the book if you want to give back to Mary tomorrow.
D. You have to find the book to give back to Mary tomorrow.
12. According to tradition , you …say good words on the first day of Tet. If you say bad words, you wont be lucky all year.
A. should B. must C. have to D. shouldnt