Can we find before an earthquake?—-Yes. Some animals will run wildly and some plants will come out in the wrong season.

Excuse me, does Mr. Zhang’s son live here? —He________ be here, but he has moved?

__________ do you have a test in school?—Every week．

What color_____ the cats?—I think ________white and black.

He has a son who ______ football very well.