--- Are you a teacher?
--- I        , but now I am working in a company.

It is strange that such a thing ______ in your school．

Never before ______ to ______ what his parents expect of him more than it is today ．

You ________ come to his office. Our boss won’t be back until next week.

Land animals are believed ______ from sea animals.

Every Monday morning, students in our school would stand at attention, watching the national flag ______.

—If he       , he      that food.
—Luckily he was sent to the hospital immediately.

The manner in which a telephone is answered gives the image of the organization, so     
polite and pleasant when answering the telephone.

John had to have his car repaired in a garage because it   seriously.

The unemployment rate in this district   from 6% to 5% in the past two years.