Teachers’ Day is a time to be________to all teachers who deserve special recognition.
It was at the school gate ______ I met an old friend of mine after class.
On hearing the _____ news that they had won the match, they shouted for joy in _____ voices.
I’m not sure whether this is the room ________ she left her dictionary.
The population of China is _______ than that of America.
By the time she ________ home, her parents will have prepared some delicious food for her.