-- Excuse me, where can I exchange _________? --There’s a bank on the second floor.
--- Are you interested in basketball? --- _________.I__________ watch it than play it.
- Could you tell me_______? - Every four years.
We carefully compared the result of the first experiment with_______ of the second one.
_______ he is very young, _______ he knows a lot about how to be healthy.
Chinese students must_______ their hands first and then _______ to speak in class.