What did you see on the large farm last Sunday?—-Oh, I saw about three ________ hens and _________ of eggs.

While the boy ______ down the street, the UFO _____ .

Why do you ____ the radio? I can’t hear the light music clearly.—I’m afraid of waking the baby up.

Lin Lin often practices English ______ chatting with her American friend. [ ]

We can see a river running to the east ____ the hill. [ ]