Tìm một lỗi sai trong bốn phần gạch chân A, B, C hoặc D trong các câu sau đây. (4 câu, 1 điểm)
1. He has got a MBA degree. He must be very hard – working.
A B C D
2. Somebody have thrown my ball away.
A B C D
3. I have finished to read a 2000 – page book.
A B C D
4. Although it was so rainy, but we had a great time in London.
A B C D