There is a mistake in each sentence. Find the mistake and correct it. (7 pts)17. The flowers who he...

Cách làm:
1. Đọc từng câu một và tìm lỗi trong mỗi câu.
2. Xác định lỗi đó và sửa lại cho đúng.
3. Chú ý đến cấu trúc ngữ pháp của câu để chọn từ hoặc cụm từ thích hợp để sửa lỗi.

Câu trả lời:
17. The flowers **that/which** he paints are always very beautiful.
18. The speed of light is much **faster than** the speed of sound.
19. Your package has **to be** wrapped carefully before it is mailed.
20. Ms Lan had an old photo album **that/which** she often showed to her grandchildren.
21. You'd better not drink the tap water. It could **be** polluted.
22. Which is the country **whose** economy is growing at its fastest pace?
23. Health and happiness are **more** important than money.