阅读下列句子，从每题所给的A、B、C和D四个选项中，选出最佳选项。
1. Please ________ us of the news as soon as you know.
A. surround B. adjust C. negotiate D. inform
2. The boy gave me his _________ to use his picture in the newspaper.
A. approval B. fluency C. theft D. globe
3. He had an empty egg-basket on his arm, and his hat was old and __________.
A. stainless B. worn C. original D. poisonous
4. For security reasons, you’re not ________ to take notes, and all materials must remain here.
A. assessed B. invested C. permitted D. rescued
5. Don’t open the email! It’s definitely a _________ to your information security.
A. deadline B. threat C. faith D. routine
