EX4. Viết các câu sau ở thể khẳng định (+), thể phủ định (-), thể nghi vấn (?) ở thì hiện tại
hoàn thành. (do at home )
1. (+) I have finished my homework.
(-) ________________________________________________________________.
(?) ________________________________________________________________?
2. (+) ________________________________________________________________.
(-) My uncle hasn’t been to Singapore before.
(?) ________________________________________________________________?
3. (+) ________________________________________________________________.
(-) ________________________________________________________________.
(?) Have they found their keys?
4. (+) Jim has just played video games with his brother.
(-) ________________________________________________________________.
(?) ________________________________________________________________?
5. (+) ________________________________________________________________.
(-) My grandmother hasn’t visited me since November.
(?) ________________________________________________________________?
6. (+) ________________________________________________________________.
(-) ________________________________________________________________.
(?) Has your sister studied Medicine for 2 years?
7. (+) It has been long since our last encounter.
(-) ________________________________________________________________.
(?) ________________________________________________________________?
8. (+) ________________________________________________________________.
(-) We haven’t graduated yet.
(?) ________________________________________________________________?
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Sinh Học lớp 12
