________ideas and contents of the 60th national day, the great ceremony was very successful.
-----Water! -----_________. ------ I can’t eat this. It’s too salty.
We started early ______ before dark.
Do you have trouble ______ the post office?
The world is _____ seven continents and four oceans.
The boy wanted to ride his bike in the street, but his mother told him _____.