Mrs. Feng loves her students and is always creative in teaching English. No one doubts her _______ as a teacher.

-- Can you lend me the book Twilight by Stephenie Meyer?-- Sorry. I returned it to the library just now. Maybe it is still _____.

 More than 68,600 foreigners are working in Shanghai.The number is 13 times ________ of 1996，when Shanghai started issuing expatriate work permits.

We are at your service. Don’t ________ to turn to us if you have any further problems.

Now that he ________ that he had made some mistakes，you should have forgiven him.