Prepositions of time

Which sentence is correct?

• We were waiting during five hours.

• We were waiting for five hours.

• We were waiting at five hours.

Which sentence is correct?

• What are you doing at the weekend?

• What are you doing in the weekend?

• What are you doing the weekend?

Which sentence is correct?

• It's so beautiful in the park on summer!

• It's so beautiful in the park at summer!

• It's so beautiful in the park in summer!

Which sentence is correct?

• We woke up on dawn because of all the mosquitoes!

• We woke up in dawn because of all the mosquitoes!

• We woke up at dawn because of all the mosquitoes!

Which sentence is correct?

• I'm going on holiday tomorrow! I'm going in two weeks.

• I'm going on holiday tomorrow! I'm going for two weeks.

• I'm going on holiday tomorrow! I'm going at two weeks.

Which sentence is correct?

• I always go out at Friday nights.

• I always go out on Friday nights.

• I always go out in Friday nights.

Which sentence is correct?

• It's very noisy at night in this street.

• It's very noisy in night in this street.

• It's very noisy on night in this street.

Which sentence is correct?

• I'll see you on next Friday.

• I'll see you next Friday.

• I'll see you on at next Friday.