1)Where was Peter yesterday? He (be) at school. The school

1)Where was Peter yesterday? He (be) at school. The school year started a week ago. 2)Im absolutely sure! They (arrive) yesterday. I saw their tickets. 3)The course (begin) on the fifth of September but Im not so certain about it. 4)Are you joking! Nick (go) to Moscow last week. Hes supposed to be at work now. 5)They (come from) London, but Im 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 shes away. 9)I cant find my cat anywhere. She (get out) through the window. The opening is too small.