giải thik chi tiết thiết giải thik là báo mod nhé 2. The class will _______ for three weeks by the time you join us. A. run B. be running C. have run D. have been running 3. While Ms Peterson _______ there, she wrote an article for their monthly newsletter. A. is working B. has worked C. will work D. was working 4. When I came to my office, I remembered that I _______ to bring my keys. A. had forgotten B. forgot C. was forgetting D. have forgotten 5. When your mother ______ here tomorrow, I’ll tell her about your behaviour. A. comes B. will come C. is going to come D. will be coming 6. We _______ for an hour when the bus finally came. A. waited B. have waited C. have been waiting D. had been waiting 7. When the storm ______ this area tomorrow, it will damage a lot of houses. A. is going to reach B. will reach C. will be reaching D. reaches 8. John _______ you when he has finished the report. A. had called B. calls C. will call D. has called 9. We had just got out of the car when it ______ to be on fire. A. begins B. began C. has begun D. had begun 10. As soon as the referee whistles, the game ________. A. started B. has started C. starts D. is starting 11. I’ll be waiting for you here until you _______ back. A. came B. had come C. will come D. come 12. I _______ geography since I became a teacher. A. taught B. had taught C. have been teaching D. teach