1)Where was Peter yesterday? He … (be) at school. The school year started a week ago. 2)I’m absolutely sure! They … (arrive) yesterday. I saw their tickets. 3)The course … (begin) on the fifth of September but I’m not so cert...

1)Where was Peter yesterday? He … (be) at school. The school year started a week ago. 2)I’m absolutely sure! They … (arrive) yesterday. I saw their tickets. 3)The course … (begin) on the fifth of September but I’m not so certain about it. 4)Are you joking! Nick … (go) to Moscow last week. He’s supposed to be at work now. 5)They … (come from) London, but I’m not sure. 6)We … (take) the wrong turn. We should be there by now. 7)They … (miss) their train. Otherwise they would be here by now. 8)It … (be) Masha who answered the phone because she’s away. 9)I can’t find my cat anywhere. She … (get out) through the window. The opening is too small.