[跟踪训练]
在空格处填入适当的词(1个单词)或所给词的正确形式
1．She (simplify) the instructions so that the children could understand them.
2．The insurance industry has produced its own proposals for (universe) health care.
3．The foreign ministers of the two countries signed a lot of (document) today.
4．Without more training or (advance) technical skills，they’ll lose their jobs.
5．The (criterion) for entry are that applicants must design and make their own work.
6．The scientist has made great progress in the field science.
7．His height makes him stand in the crowd.
8．The guards were hired to watch the houses as they were being built.
9．Shopping the Internet is becoming more and more popular.
