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.