Choose the correct prepositions to fill in the gaps

1. Today is a nice sunny day with the temperature 20°– 30° [above|below|up] zero.
2. It's 25 degrees [below|off|of] frost. It's not pleasant to go for a walk [at|in|on] this temperature.
3. The garden looked very beautiful because of thick snow [in|at|on] the ground.
4. It's spring now and the temperature doesn't fall [above|below|up] zero.
5. Hi, Sam! Come in and take [off|on|out] your jacket. It's warm in here.
6. On hot sunny days children must put [off|on|out] caps.
7. The girls were already [on|with|in] their nighties ready to go [in|to|out of] bed.
8. Ben fell [from|to|at] the ground but quickly got to his feet again.