Dưới đây là các gợi ý và sửa chữa lỗi từ gạch chân trong các câu của bài tập:

1. Even though she looks young, she is **twice older** than my twenty-year-old sister.
- **Sửa thành**: _twice as old_

2. He asked me to clean ten windows, **most of them hadn’t** been cleaned for a year.
- **Sửa thành**: _most of which_ hadn't

3. Because of **tired**, we could not go to school yesterday.
- **Sửa thành**: _**being tired**_

4. We object to people **to make** private calls on the office phone.
- **Sửa thành**: _making_

5. The **amount** of women earning Master's Degree has risen sharply in recent years.
- **Sửa thành**: _number_

1. Cancer researchers have done **great** progress. However, many aspects of this disease need further study.
- **Sửa thành**: _made_

2. She always speaks English to her boss **meanwhile** she is in the office.
- **Sửa thành**: _while_

3. **Alike** bears, the giant panda of China has a clumsy manner of walking.
- **Sửa thành**: _Like_

4. John has **not rarely** missed a match since the season started.
- **Sửa thành**: _rarely_

5. **Originate** in Ethiopia, coffee was drunk in the Arab world before it came to Europe in the 17th century.
- **Sửa thành**: _Originating_

1. Not **put** your clothes on the bed.
- **Sửa thành**: _Don't put_

2. They normally **caught** the early bus but today they came to visit us with a car.
- **Sửa thành**: _catch_

3. What do you often have for **the** lunch?
- **Sửa thành**: _(nothing)_ (bỏ "the")

4. Kangaroo, **that** can be seen everywhere in Australia, have long tails.
- **Sửa thành**: _which_ (hoặc _Kangaroos, which_)

5. It is essential that everyone **is** responsible for keeping the environment unpolluted.
- **Sửa thành**: _be_

1. Mary, together with some classmates, **have** gone hiking in the mountain.
- **Sửa thành**: _has_

2. It was suggested that Pedro **studies** the material more thoroughly before writing the essay.
- **Sửa thành**: _study_

3. No one of us wanted to **discuss about** this matter then, so we changed the subject.
- **Sửa thành**: _discuss_

4. Do you know **a** girl in blue standing over there?
- **Sửa thành**: _the_

5. She kept the children **amusing** for hours by telling them funny stories.
- **Sửa thành**: _amused_

Hi vọng các gợi ý trên sẽ hữu ích cho bạn trong quá trình ôn tập!