_____ this way, you can work out the math problem.
— I can’t decide __________or not I should encourage my son to be a volunteer. — Why not? It will make him more helpful.
---I seem to be lost. Could you tell me _____? ---Sure. You can take the No.3 bus to get there.
--- What did Mike say? ---- He said ______.
Tom asked my friend ________.
It is clever ______ you ______ out the problem.