用所给单词的适当形式填空，每空一词.5%.(注意个别单词要变换形式).

Can you show me _________your school? Sure, let’s go.
Here is a __________ of my family.
There are many books in the school __________.
Betty writes to his father _______ a week.
--- What is our teacher doing ?
--- She  is ____________  to a friend now.