Darling, hand me the new suitMy coat may be a little casual for the lecture.— Why bother? I think you can go______ you are

__________ he does has nothing to do with me.

The fire _______ before the fire-fighters arrived

Cardealers also have a tough time in bad economy. Therefore，they have to ________ their businessmodel to overcome the difficulties.

On Saturdays, students are very proud to be on the street to guide passers-by to obey traffic rules.