Today is Wednesday. He _______be at home. He _______be at school.

I told Sally how to get here, but perhaps I ___ for her.

I want to open the door, but it _____ open.

--- We need someone to host the New Year Party. --- ________ the handsome young man have a go?

Brain, like muscles, also needs some kind of exercise and nutrition. The more you use your brain in the right direction, the more you ________ enhance your ability.