Choose the correct response.

I. A: What are you watching this for?
B: ...
2. A: What's on later?
B: ...
3. A: After this, there's a game show on Channel 3.
B: ...
4. A: Big Brother is on Channel 4.
B: ...
5. A: As long as we can change the channel at B: 7 pm.
B: ...