1. There are thousands(A) of kinds of bacteria, many (B) of whom (C) are beneficial (D). 2. In spite of (A) their (B) frightening (C) appearance, the squid is shy and completely harmless (D). 3. One of the most (A) popular holiday (B) in the U.S. is (C) Thanksgiving, which is celebrated in (D) November. 4. The girl whom about (A) we are talking (B) used to be (C) a Miss World (D). 5. After John eaten (A) dinner, he wrote (B) several letters (C) and went to bed (D). 6. Food prices (A) have risen (B) too (C) rapidly that we have to change our eating habits (D). 7. She asked why (A) did Mathew look (B) so embarrassed (C) when he saw (D) Carole. 8. When (A) I met John last year, he has already graduated (B) from (C) university for (D) a year. 9. Do you (A) think two hours are too (B) long to wait for (C) someone (D)? 10. My (A) mother still spends (B) 14 hours a day (C) do (D) the housework. Sửa lỗi sai- nhanh nha

1. There are thousands(A) of kinds of bacteria, many (B) of whom (C) are beneficial (D).

⇒ kinds of bacteria.

2. In spite of (A) their (B) frightening (C) appearance, the squid is shy and completely harmless (D).

⇒ its

3. One of the most (A) popular holiday (B) in the U.S. is (C) Thanksgiving, which is celebrated in (D) November.

⇒ popular holidays

4. The girl whom about (A) we are talking (B) used to be (C) a Miss World (D).

⇒ about whom

5. After John eaten (A) dinner, he wrote (B) several letters (C) and went to bed (D).

⇒ had eaten

6. Food prices (A) have risen (B) too (C) rapidly that we have to change our eating habits (D).

⇒ so

7. She asked why (A) did Mathew look (B) so embarrassed (C) when he saw (D) Carole.

⇒ Mathew looked

8. When (A) I met John last year, he has already graduated (B) from (C) university for (D) a year.

⇒ he had already graduated

9. Do you (A) think two hours are too (B) long to wait for (C) someone (D)?

⇒ think two hours is too

10. My (A) mother still spends (B) 14 hours a day (C) do (D) the housework.

⇒ doing