—After P.E., I often feel very thirsty. —Why not buy some ________ to drink?
The old man has two daughters, but ________ of them lives with him.
. --- Could you tell me _________ for Beijing?--- At 8:30 tomorrow morning.
The library ________ we built last year is the biggest one in Guangzhou.
Before the new year, _________ people went to visit the flower market.
--- When did you meet your English teacher?--- While I _________ a bike along Jiaomen River.