In our class, when the bell rang and the teacher closed his book, it was a ________ for everyone
to stand up.

The system has been designed to give students quick and easy ________ to the digital resources
of the library.

单词拼写
     根据下列各句句意和空白之后的汉语提示词, 在横线上写出对应单词的正确、完整形式, 每空只写一词。
1. He was active in politics and was strongly against ________ (奴隶制度).
2. English and ________ (美国的) spellings of some words are different.
3. His shortterm ________ (记忆) was damaged in the accident.
4. The ________ (正常的) temperature for a human being, no matter what part of the world he lives in, is about 37?.
5. Employers usually ________ (偏爱) candidates with some previous experience of the job.
6. We can save words by ________ (安排) the sentence like this.
7. In the US, winter wheat is ________ (收割) in the early summer.
8. I do not think there can be any doubt that she'll ________ (克服) the difficulty.
9. Neither recorders nor ________ (照相机) are allowed in the theatre.
10. He said that he hadn't been treated ________ (公平地) by the policeman.

We have been told that under no ________ may we use the telephone in the office for personal affairs.

We should bear in mind that social development and balance of nature should go in ________.

She was glad that he had good _________ in the choice of friends. 

I can't advise you what to do and what not to do, it's a matter of _____.