So difficult ___________ it to live in an English-speaking country that I determined to learn English well.
I shall never forget the days ______ we spent together with my grandfather in that old house.
____ is up to us to give them all the help _____ we can.
She is shy. She is not used to_____ in front of others.
I have great faith _____ you----I know you will do well.
I prefer playing outdoors ____ television.