Question 12. Find the mistake in each sentence They are doing their homeworks in the library . A. are B.doing C.in D.homework Question 16. Choose the best answer: Does /have / subjects / Nga / What / today/? A. What does Nga have subjects today? B. What subjects Nga have does today? C. What subjects Nga does have today? D. What subjects does Nga have today? Question 17 . Choose the best answer: studying/ am/ I / English / my/ lesson /for/. A.I am studying for English lesson B. I am studying lesson for English C. I am studying for lesson English D. I am studying English for lesson Question 18. Read and choose the best answer: This is Mai. She is a student. Now she is having a Science lesson. It is her favorite subject. She is reading a text on zoo animals. And that is Phong. He is Mai's friend. He is doing a crossword puzzle about animals. - What is Mai’s favorite subject? -- It’s________________ A. English B. Science C.Math D.IT