We will keep you __________ what will happen here.

His house, for _______ he paid $10, 000, is now worth $50, 000.

The stranger stopped and turned around ____ to see if someone was following him [ ]

Mom，don’t you think it’s OK to play once in a while ____________ it doesn’t affect my studies?

In such dry weather, the flowers will have to be watered if they _____. [ ]