Заполните пропуски правильными предлогами:
a) места
1. The chair is ... the writing table. 2. There are great pieces of art ... the walls of Hermitage. 3. It is wonderful to fly ... the blue ocean.
b) времени
1. We celebrate Christmas … the 7th of January. 2. It is getting colder ... night. 3. It is necessary to do exercises ... the morning.