I didn't understand the question ____________.

After a long wait, the bus finally arrived ____________.

• at last

• at once

• for now

He admitted that he was ____________ for the mistake.

She realized it happened ____________ and apologized.

The outcome of the game is ____________, as the team's reputation is on the line.

He bumped into that fancy sport car ____________ in the crowded hallway.

• by mistake

• by accident

• in vain

Let's stay here ____________ and decide later.

She decided to quit her job ____________ and pursue her passion.

I can't lend you my car. ____________, I need it myself.

• for the time being

• for one thing

• for good

Despite the chaos around him, he remained ____________.

• in control

• under control

• in doubt