Prepositions. Fill in a correct preposition.

1. My father works for a large company which is situated (...) a huge skyscraper in the city center. His office, which is (...) the seventh floor, is spacious and bright due to the natural light coming in (...) the large windows.

2. Punctually (...) seven-thirty (...) the morning I go (...) the bathroom and have a shower. When I've dried myself (...) a towel, I get dressed.