If you want to save your eyesight, you must operate immediately. A. Unless you want to save your eyesight, you mustn’t operate immediately. B. Only by operating immediately can you save your
If you want to save your eyesight, you must operate immediately.
A. Unless you want to save your eyesight, you mustn’t operate immediately.
B. Only by operating immediately can you save your eyesight.
C. Provided that you must operate immediately, you can save your eyesight.
D. If you did operate immediately, you couldn’t save your eyesight.