~ばいい (should do / just X)

…Haah, how am I supposed to make sense of this situation, I wonder?

I wish the fog would clear soon.

She told me where I should go.

She had no idea what to wear to the party.

Just go flip the breaker on and come back. Hurry up!

To calculate the volume, just multiply length, width, and depth.

What time should I gather in the lobby tomorrow morning?

Finding your way around Nagoya is easy. You just have to look at the signs.