---May I look at the menu for a little while?---Of course, ______ sir.
The reason ___ he didn’t attend the meeting yesterday was ___ his child had fallen ill.
The old man ___ us interesting stories when we were young.
You should learn from the others ___ you are.
Look! Serveal __ are watching a group of ___ eating grass on the hill.
When she first arrived in China, she wondered what the future might havefor her, but now all her worries are gone.