1/tâm doesn't type as fast as she used to
=>tam used to.......................................................................................
2/The play was so boring. however,hoa saw it from beginning to end
=>although.....................................................................................
3/there were some trees in the field,but now there aren't any
=> there used....................................................................................
4/they didn't often go to the cinema every sunday last year
=>they didn't use....................................................................................
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Sinh Học lớp 12
