Dependent prepositions

Choose the right preposition. This information is available ____ anyone.

Choose the right preposition. I hope I'll have the opportunity ____ seeing you often.

Choose the right preposition. They were aware ____ the difficulties that might occur.

Choose the right preposition. Did you benefit ____ your holidays?

Choose the right preposition. Are you available ____ а meeting tomorrow?

Choose the right preposition. The school benefited ____ the new equipment.

Choose the right preposition. Charles Darwin was contemporary ____ Karl Marx.

Choose the right preposition. The 20th century witnessed а lot of outstanding achievements ____ science.

Choose the right preposition. The citizens of the town contributed clothing ____ the flood victims.

Choose the right preposition. Some insects are beneficial ____ plants.