Who will most probably take care of the middle-aged Americans when they need care themselves（）

单项选择题When he went to a restaurant, Peter would （）

A. pretend that he could not read or write
B. pretend to be studying the menu
C. be desperate for help from other people
D. protect himself by playing a musical instrument

单项选择题The children are required not to leave the building unless（）to do so

A. being told 
B. they will be told  
C. be told
D. told