Помогите 45 балов дам

1) We haven't seen Gavin since he got a new job.

2) Natalie has rung me four times since I saw her this morning.

3) Kelly has not checked her emails since she arrived home.

4) I haven't spoken Spanish since I traveled to Spain last year.

5) Oliver has entered many competitions since he left school.

6) We have visited Sandra three times since she moved to Poland.

Всего наилучшего; Удачи в учёбе =)