We should mind our behaviour ______ public.
Was it in the beautiful park ________ was located by the sea ________ we first met our new Chinese teacher?
To our delight, up till now, the European Union, Japan, and Russia ________ their targets for CO2 emissions (排放).
"In no case ________ you are a Chinese." Dad told me before 1 went to Japan,
Whenever I think of my childhood, I'll always feel that the period of free time seem to have passed ________
-- Excuse me. ________?--That's $ 5 altogether, sir.