GIẢI THÍCH NỮA ĐÓ NHA II. Điền “For” hoặc “Since” vào chỗ trống thích hợp: 1. It has been raining ................................... lunchtime. 2. My boss will go away ................................... the next ten days. 3. I’m staying in England ................................... a year. 4. She has lived in London ................................... 1985. 5. Please hurry up! We have been waiting ................................... an hour. 6. I have known her ................................... January. 7. Nam’s father has worked in this company ................................... 20 years. 8. Have you learned English ................................... a long time? 9. I haven’t seen Tom ................................... we left school. 10. The house is very dirty. We haven’t cleaned it ................................... years. 11. My sister has been a student ................................... two years.