II. Complete these sentences with in, on, at : 1. The results of the election were announced ________eleven o’clock. 2. Mobile phones were invented _______ the 20th century. 3. Our flight is leaving _______Wednesday at 9.30 _______the evening. 4. I can’t read a book _______the bus or ________ a car . 5. We are going to put all our old books__________-the shelves.

1. at
2.at
3. on, in
4.in, in
5.on