II. Bài tập chuyển đổi thì hiện tại hoàn thành sang quá khứ đơn
1/ How long have you been here?
2/ This is the first time I have seen such a beautiful girl.
3/I haven't gone to school for 4 months because of covid-19.
- the last time went to school was 4
nt to schu months a
Thust went ...
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