prepositions of time and place

A: When's the movie?

B: The movie is _____ Friday _____ 8:30.

(a)  

A: Where is he?

B: He's not here right now. He's (a)   work.

A: Where's his office?

B: It's (a)   the center of town.

A: When was her mother born?

B: She was born (a)   January 1.

A: When does the movie take place?

B: It takes place _____ the 19th century _____ Africa.

(a)  

A: _____ the weekend, I'm going to the concert ______ the public library.

(a)  

The park opens _____ 6:00 _____ the morning and closes _____ dusk.

(a)  

Is the concert hall (a)   Grove street?

I think the theater is (a)   the right side of the street.

Let's go to the evening show. The concert is outside, and the weather is really hot (a)   the afternoon.