Choose the alternative in which the conditional structure is correct.

✂️ a) Unless it had been for ?eke?s daring rescue, we wouldn?t be there.

✂️ b) If it might rain, our children would need their umbrellas.

✂️ c) Susan and Barbara should visit Vienna even though it is expensive.

✂️ d) If the weather got too hot, I were not feeling well.

✂️ e) I couldn?t have made it on time unless I?d had an executive jet.

Responda: Choose the alternative in which the conditional structure is correct.