Join into a single sentence without using and, but or so:
i) Rahul is a clever boy. The other boys are not clever.
ii) You must study diligently. You will miss your grade otherwise.
iii) If you don't come, I will not go out.
i) Rahul is a clever boy, though the other boys are not.
ii) You must study diligently or you will miss your grade.
iii) Unless you come, I will not go out.
ii) You must study diligently or you will miss your grade.
iii) Unless you come, I will not go out.