Here are the sentences with the correct forms filled in:
1 A: Do you want me to give you a lift?
B: No, thanks. I'd rather walk.
2 A: Would you like me to cook dinner tonight?
B: OK, but how about making something light, like soup?
3 A: Do you fancy watching a DVD?
B: Good idea. Let me make some popcorn.
4 A: I don't remember locking the door.
B: There's no point worrying about it. I've locked it.
5 A: Don't forget to call the doctor to make an appointment.
B: Oh yes. Thanks for reminding me.
6 A: It's no use trying to park there. The space is too small.
B: You're right. I'll have to drive around the block again.
7 A: I was glad to hear you passed your exams.
B: Yes. I was the only one in my class to pass all of them.