The English teacher isn’t here. She ________ to the office.

This is the first time I __________ to the capital to attend the celebration ceremony.

When I meet difficulties, my mother always tells me __________ in myself and not to give up.

Is Mrs.Smith in?—I’m afraid she isn’t．Would you like to ________ a message?

I think English is __________ unimportant subject.— I don’t think so. It is __________ useful tool when we talk with foreigners.