______ the voice of her father, she was happy and ran out of the room to greet him.
Over two thirds of the population were believed to have no ______ to the health care in the west rural area in China.
You should look _______ into the matter to get more information about it.
They keys were __________ to our neighbours during our absence.
–Are you a teacher? --No, but I ________.
–You speak very good Chinese. --Thanks. I _______ it for 4 years before I came to China.