17. ______ is most important to me, I think, is my teaching course.

A. conquered            B. occupied              C. possessed              D. owned

16. When I arrived I saw the place was already ______ by two strangers in uniforms.

C. had written; didn’t                             D. would write; hasn’t

A. would be writing; hasn’t                        B. was going to write; doesn’t

   ―But he ______ yet.

15. ―Jack said he ______ to you as soon as he arrived.

C. I’ll keep it down next time                       D. Please forgive me

A. Oh, I know                                   B. Sorry, I didn’t realize it was that loud

―________.