A less pleasant question popped into his mind as well.

A question popped into her mind, and she wondered if it was related.

I was very scared and many questions popped into my mind.

With those questions popping through his brain, Harry looked for the cable, saw it, and realized how he had guessed wrong.

Mikhail was not certain why that question popped into his mind, but it did, and he wanted to know the answer.

The question had popped out of Tally before she could think.

Then up pops a question from you or one of your friends that no one can answer with certainty.

The uneasy question popped into her head out of nowhere.

As he returned to the climb, a question popped into his mind.

But the questions just popped out of her mouth.