1. At the moment i (chat) .............. with my cousin in Sydney on Skype
2. After the floodwaters (go)............. don, people cleaned their house
3. The teacher told his students (stop) .............. making noise
4. If People really cared about the envirinment, they ( not/dump) ............ waste into the lake
5. They didn't mind (work) ............. late to complete the task
6. English/widely/ speak/ around/world
..............................
7. Noise pollution/big cities/can/lead/hearing/problems.
...............................
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Sinh Học lớp 12
