1.are... am looking...
2.has broken...
3.Where is your sister? She has just gone to school.She left home.....
4.When did she return to Kyiv?She has returned this week.
5 What are you reading now? I am reading White Fang.Have you ever read this book? 6.Do you remember me?We have met here this month.
7.Have they discussed this question? Yes, they discussed it last week.
8.Where mother has put my magazine?I am looking for it now.
9.Whom are you waiting for? We are waiting for the doctor.- The doctor went some minutes ago.
10.I have not any news from them since they have left Kyiv.
11. Have your children have already read this text?- Yes, they read it at the last lesson.
12.There is nobody here now. All the students have gone home.