1 . 根据语境，选择下框中的单词或词组，必要时用正确的形式填空。框中有多余的三个单词或词组。每个单词或词组只能使用一次。

access;       embarrass;       remind; exist;       aware;       approach;       keep track of; private;       familiar;       keep your eyes open;       benefit;       individual;        concern

1. Before the show, the audience was ________ to turn their cellphones off in the theatre.
2. The aim of Earth Day is to raise public ________ of environmental protection.
3. The Internet is much more accessible, from which my studies have ________ a lot.
4. People are always more relaxed in places with which they are ________.
5. The speaker recommends several effective ________ to improving learning efficiency.
6. The behavior of men as ________ is different from their behavior in a group.
7. There are now some apps that can help you ________ your spending.
8. Income is a matter of ________ for most Americans, although some may be open about it.
9. The system has been designed to allow students ________ the digital resources of the library without difficulty.
10. Thirty workers were trapped underground after the fire, which ________ us a lot.