The old man got on the bus, but nobody_________ for him.

Excuse me. Is this your eraser, Jim—____ eraser on the desk Oh, no, it’s Gina’s.

I went over what I have writ ten again and again ____________ I wouldn’t make any mistakes.

下列句中加横线词的解释有误的一项是（ ）

21．Tom still thinks that The Hurt Locker is ________