单项选择题
Although wewaitedmorethan half anhour,Marydidn’tturn_____at the conferenceroom.
Hearing that he had passed_____health examination, he i...
Hearing that he had passed_____health examination, he immediately made_____call to his parents.
_____you are,friendsarean important partof lifeateverys...
_____you are,friendsarean important partof lifeateverystage.
