--- Tom, what do you think is the secret ____ writing in English?---- ____ reading lots of English activities, you can improve it a lot.
We don’t know her. She is a ______ to us.
Peter, please give my best wishes ______ your family.
Peter is afraid ______ English in class because his pronunciation isn’t good.
It will take a lot of time, so you must be ______, young man.
If we don’t use money ______, we’ll have a difficult time.