They never interrupted anyone who was browsing, but would gladly answer questions if asked.

But read it and then, if you have any questions, I will gladly answer them.

'Doctor, I'll gladly answer all your questions, if you'll just answer one of mine.'

If you can convince me that it will be unbiased, I shall gladly answer the question.

Look, I'll gladly answer all of your questions.

Drizzt gladly answered that toast with a tap of his own glass.

"That is all I wish to say, but I will gladly answer questions."

But you of course I'll answer gladly.

It becomes necessary to ask a few questions, which I know you will answer gladly.

Mr President, I will gladly answer the question.