Our expert psychologist ...... (not / know) much about animals, but he certainly understand the human psyche.

The dogs ...... (not / keep) barking all night long, but they do keep making these annoying sounds when we come home from work.

The clown ...... (not / make) excellent performances, but the kids just love the way he sings and dances.

The magician ...... (not / perform) real magical tricks, but he does have a great way to get through to you.

The neighbours ...... (not / invite) us to their dinner party on Saturday night. I hear it's supposed to be a family only party.

I guess the local GP ...... (not / come) to see you tonight, but she will definitely have a look at you tomorrow.

You ...... (not / be) serious about selling the house and moving to the countryside, Alan. What are you going to do there?

The children ...... (not / arrive) at home yet. I've tried to call them three times already and there's still no answer.

The lovely engineer ...... (not / be) promoted already. He's only been with the company for two months and it usually takes more than a year to get your first promotion.

The phone ...... (not / work) right. I've dialled our number three times already and still there's no ringing.

I'm afraid your cat ...... (not / stay) in the house all alone. It's against the rules.

The chimp ...... (not / live) on bananas alone. It'll die if you don't feed it anything else, David.