Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
The famous actor often plays _____his children in the park.[ ]
Who’s the little baby in the photo, Susan? –It’s me. This photo ________ fifteten years ago.
__________ a cold winter evening, her grandfather died.[ ]
It is the first time that I _______ this kind of moon cake.