She learned how to ride a bike _________ at the age of 6.
My father ______ my mother when they were both 26 years old, and they have ______ for 15 years.
-Excuse me, is there ______ book by Mo Yan? -Yes. It’s on ______ bookshelf over there.
There ____two football matches at school next month.
I hope you _fun visiting the museum tomorrow.
_______ left, and you will see giraffes after you _______ the bridge.