On our arrival, we found Tom _____at the desk and ______a letter.
John knocked at the door for nearly five minutes____his wife opened it.
---The thread of my kite broke and it flew away.---I told you it would easily break_____was the weakest.
They were surprised that a child could work out the problem____they themselves couldn't.
.I had been puzzled over the problem for over an hour without any result, _____ all at once thesolution flashed across my mind.
Sally worked late in the evening to finish her report _____ her boss could read it first thing next morning.