1 . Hearing that my good friend was out of danger, I __________（如释重负地挂断了电话）。（根据汉语提示完成句子）

2 . 用方框中所给的动词短语的正确形式填空。
leave sb alone； turn around；   test out；set aside；   ring up；   smooth away
1. How many people __________________ while I was out?
2. The model must ____________________ before we put it into mass production.
3. __________________, I saw an old friend of mine, whom I haven’t seen for years.
4. She is very upset. _______________ for a few minutes.
5. It’s time for us _________________ our differences and work together for a common purpose.
6. There are still a few problems to be ___________________ before we can complete the project.