She will tell us why she feels so strongly that each of us has a role ________ in making the earth a better place to live. [ ]

________?— Sorry. I don’t know.

The poor postman was fired before he could __________his fault.

My brother often _______ e-mails to his pen friends.

We are so lucky to have so many caring teachers.—Yes, they are really lovely. I am thankful them what they have done for me.