25. think it though very carefully . or else , you will not come up with the right answer
A. if you think it through very carefully, you will not come up with the right answer
B. althought you think it through very carefully, you will not come up with the right answer
C. however carefully you think it through you will not come up with the right answer
D. unless you think it through very carefully, you will not come up with the right answer
(giải thích hộ mình với ạ )
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Sinh Học lớp 12
