I don’t know what _____ if I dothat.—I think you ______ tell him the wholething first.

_______you are familiar with the author’s ideas, try reading all the sections as quickly as you can[ ]

It’s no use arguing with him; _____ to persuade him to join us, he did not change his mind.[ ]

Sometimes we buy a magazine with absolutelyno purpose ________ to pass time.

know ______—Sorry, but if he _____ back, I ____ youknow as soon as possible