Arrange the words to make meaningful sentences
1)think/I/it's/time/to/do/to/reduce/in/something/traffic jams/Vietnam
2)there/city center/traffic jams/are/the/in/rush hour/often/the/in
3)about/people/use/in/worry/the past/traffic/didn't/congestion/to
4)wear/a/helmet/compulsory/is/when/in/it/to/riding/Vietnam/a/motorbike
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Sinh Học lớp 12
