Помогите решить write who-questions to the following sentences
2. liz sang very well at the party yesterday
3.we had a good time in the country on saturday
4.they left london for moscow last week
5.the teacher said it to us at the lesson yesterday
6.dan spoke a lot on the phone last night
7.bob and tim heard that last friday
8.richard made a nice present for his sister
9.my parents flew to kiev last month
10.bob came home late at night