If the students who killed themselves had only been more confident, their deaths ________.

—________ I smoke here?—No. You are not allowed to smoke in public places.

—Could I enter the apartment to look for my sister?—Sorry, you ______. Men _______ go into the apartment for girls.

–Mom, must I stay there the whole day?--No, you______. You ____ come back after lunch, if you like.

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.