Chia động từ ở quá khứ tiếp diễn hoặc quá khứ đơn

1. Chia động từ ở quá khứ tiếp diễn hoặc quá khứ đơn
1 While divers____ (work)  off the coast of Florida, they ___ (diccover) 100-years-old shipwreck____(contain) gold bars worth $2 milion. The divers___(film) life on a coral reef when they___(find) the gold.
2 A man was find $4000 for stealing an ambulance. The ambulance  drive___(make) a phone call when the thief ___(start up) the ambulance. He ___(speed) away when the drive___(see) him and___ (call) the police
3. Police got a shock when they___(stop) a motorbike as she (speed) on the high way. While they ___ (seacrch) the trunk of her car, they ___(find) three snakes. The drive said she ____ (take) them ti a pet fair.
4 Last night when we___(come) down the hill into town, we ___(see) on strange object in the sky. It just suddenly ___(appear) in front of us. We ___(stop) the car and ___(get0 out.As we ___(watch)it,it suddenly____(fly) away and___(disappear).
5 Its was my first day of class. I ____(finally/find) the right room. The room ___(already/be) full of students. On one side of the room., students___(talk) busily to each other in Spanish. Other students___(speak) Japanese, and some___(converse) in Arabic. It sounded like the United Nations. Some of students, however ___(just/sit )  quietly by themselves. I___(choose)an empty seat in the last row and___(sit) down . In a few minutes, the teacher____(walk) into th room and all the multilingual conversation ____(stop).

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