1. His lights are on so I'm pretty sure Dan is at home. (as)
Dan his lights are on.

2. Susie's car's not here so she's almost certainly taking Dabber to the vet. (be)
Susie Dabber to the vet since her car's not here.

3. There's no way that boy's Simon. He's much taller! (boy)
That Simon. He's much taller!

4. I'm certain the Winners don't think we're coming tonight; we arranged it for next Tuesday. (expecting)
The Winners tonight; we arranged it for next Tuesday.

5. I bet you were exhausted after such a long journey! (have)
You exhausted after such a long journey!

6. The only explanation is that Evan was on the phone to someone in Australia! (talking)
Evan on the phone to someone in Australia!

7. There's no way Casey won the disco dancing competition - he's got two left feet! (have)
Casey the disco dancing competition - he's got two left feet!

8. I don't believe Helen's been trying to call us all day. The phone hasn't rung once. (been)
Helen to call us all day. The phone hasn't rung once.