The driver was badly hurt and he needed to be sent to the hospital________ once.
The moon tonight is ________ a plate. It is so round.
I heard________ the book long ago, but I haven't read it yet.
Do you know Jay Chou will come to our city? I heard the news ________ the radio just now.
Uncle Wang began to work ________ a bus driver when he was thirty years old.
(2018承德一模)This is a common mistake a________students.We should pay attention to it.
