----- Nội dung ảnh ----- 12. That boy _______________ (wait) for the bus for half an hour. Shall I tell him that the last bus has already gone? 13. They _______________ (argue) very excitedly all this time. Shall I come and interrupt them? 14. What have you done with my bag? I _______________ (look) for it for an hour and I haven’t found it yet. 15. I _______________ (think) over what you said since yesterday. KEYS 4
