jup e Bài 1: Hoàn thành câu với since và for 1. I have been a teacher ……… 30 years. 2. Bob has worked in that import-export company ……… he was 20 3. I have studied English ……… four years. 4. Jenny has eaten five hamburgers ……… 7 pm. 5. My parents have been married ……… twenty years. 6. I have known my best friend ……… I met him at high school. 7. They have traveled in the USA ……… one month. 8. The boys have played tennis ……… two hours. 9. Kevin has been in Greece ……… July. 10. My bother has drunk beer ……… two hours.