Câu hỏi:

This new laptop cost Mark one thousand dollars.

“spend ... on sth” ↔ “sth costs ...”

Câu hoàn chỉnh: Mary took care of my children because I went on business.

Câu hoàn chỉnh: The lakes are so dirty that we will clean them up tomorrow morning.

Example paragraph:

One of the healthy habits I follow is doing morning exercise. I started this habit two years ago after reading an article about the benefits of physical activity. Every day, I wake up at 6 a.m. and spend around 30 minutes jogging around my neighborhood. It helps me stay fit and energetic all day. I also drink enough water and eat more vegetables and fruits. I avoid junk food because I know it’s harmful to my body. These habits make me feel more relaxed and confident. In my opinion, keeping a healthy lifestyle is very important, especially for students like me who need both physical strength and mental focus to study effectively.

A. celebrity → /səˈlebrəti/ → âm “ce” phát âm là /s/

B. calculation → /ˌkælkjuˈleɪʃən/ → âm “ca” phát âm là /k/

C. complicated → /ˈkɒmplɪkeɪtɪd/ → âm “co” phát âm là /k/

D. community → /kəˈmjuːnəti/ → âm “co” phát âm là /k/

Ba từ B, C, D đều có âm đầu là /k/,

chỉ A. celebrity có âm đầu /s/ → khác biệt.