To my surprise, my good friend _________ stay up to study to prepare for the next important exams organized by ten famous high schools.

--I once got lost during my first visit to Beijing. -- Oh, did you? You ____ me as your guide. 

－Will you accept the job offer?－If I       five years younger, I       it.

What a pity! Considering his ability and experience，he___ better．

The politician has been warned that he would be getting into great trouble _______ stick to his standpoint.