—Mum, would you please buy me an MP5 player?—If you can help do the dishes the whole vacation, you ________ have one as a reward.

一What will the weather be like tomorrow?一It     be rainy ,cloudy or sunny．Who knows? Even the weather report is not always right.

—What do you think people can do for their aged parents?—They_________ do anything except to be with them and be themselves. 

The work is too hard for him. He__________ finish it on time.

—What does the sign over there read?—No person ________smoke or carry a lighted cigarette ,cigar or pipe in this area.