The panda is shy. Please _______.
A:quiet
B:be quiet
C:happy
D:be happy
三峡水利枢纽工程是一项化水害为水利的跨世纪工程,战国时期李冰父子也修筑了具有同样性质的一项著名水利工程,它是( )
— What would you like?— I'm thirsty. I'd like_________.