Die Fragenbildung im Simple Present mit „to be“ (am, is, are)

Setze „am“, „is“ oder „are“ in die Fragen ein.

1 I late?
2 CDs expensive in your country?
3 your mother at home?
4 the students interested in sport?
5 the skateboard club open today?
6 Jake from London?
7 your father at work today?
8 these your shoes?
9 it cold in your room?
10 there a lot of people on the train?