giúp em với ạ ----- Nội dung dịch tự động từ ảnh ----- IV. Find a mistake in each sentence below 21. Bicycles are cheap and environmental friendly. A B C Ꭰ 22. If you have suitcases, you would go by car and by train. A B C D 23. Travelling by bicycle is good if you haven't any luggage. A B 24. I have never read this story ago. A B C Ꭰ C 25. The city is facing serious polluted problems. A B C Ꭰ D