1.If Jack (invites Tim to
his birthday, he will come
2.have You ever been (be) abroad?
3. While
they were swimming (swim), mom cooked (cook) supper.
4. The
guests came because Jane had called (call) everybody.
5. They
will have already left (leave) London by this time next week.
6. They
are not sure if we supports (support) them in a week.
7. Nick had
gone (go) away before the letter came.
8. She will has travelled (travel) about England for
a week by the 15th of June next year.
9. When I
came home, mom were talking (talk) to her friend.
10. It has
snowed (snow) since 12 o'clock. There is
a lot of snow outdoors.
11. They were
cleaning (clean) their flat by 10 p.m. yesterday.