Chia các động từ sau ở thì Quá khứ đơn và Hiện tại hoàn thành

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BT 1. Chia các động từ sau ở thì Quá khứ đơn và Hiện tại hoàn thành
1. I (not see).
him last Monday.
2. Up to the present, we (write)
3. How many times
4. Mary (lose)
5. I (read)
6. He (write)
7. Mr Green. (teach)
almost every lesson in the book.
you (see)
her hat and she (look)
the novel written by Jack London several times before.
a book since last year.
from the university in 1986.
8. My father (not smoke)
9. How long.
10. She (win).
English in this school since he (graduate)
for 5 years.
him since he went to Edinburgh?
for it until now.
Bob and Mary (be)
the gold medal in 1986.
married?