Test Inglés #2 Preposiciones In, On, At

I have an important conference call scheduled ___ Wednesday morning. In. On. At. By.

The world changed significantly ___ the 19th century. In. On. At. By.

We are planning to meet for a quick coffee ___ noon. In. On. At. During.

The university was founded ___ October 12, 1923. In. On. At. Since.

I don't like driving ___ night, especially when it rains. In. On. At. During.

The results of the medical test should be ready ___ two weeks. In. On. At. During.