but

We're making a lot of progress, but we've still got a long way to go.

Anna's a highly intelligent girl, but she's very lazy.

a simple but effective way of filtering water

What we are about to do is perfectly legal. But please don't discuss it with anyone.

It was a very complicated operation. But I don't want to bore you with all the details.

There's also the question of how we're going to pay for this, but we can discuss that some other time.

Excuse me, but is there a post office around here?

I'm sorry, but all our operators are busy at the moment.

She does nothing but complain all day long.

There's no alternative but to scrap the whole plan and start again.

I refuse to discuss my medical history with anyone but Dr. Grant.

"I've decided to resign." "But why?"

But you promised not to do anything without asking me first.

We can but guess at the extent of the problem.

Several Japanese companies already operate in the U.S., Nissan, Honda, Fujitsu, to name but a few.

I never take a bath but the phone rings or someone knocks at the door.