She's been waiting ___ the train for over an hour.

She's been waiting ___ the train for over an hour.

• A. at
• B. for
• C. to
• D. on

Answer: (B)

This tests the natural collocation with the verb wait and how to express the thing being waited for, plus how to show duration. We usually say wait for something when we’re waiting for an event or object to arrive or occur. Here, waiting for the train is the idea, and over an hour shows the length of time, so using for to express the duration is also correct. Put together, the sentence becomes natural: She's been waiting for the train for over an hour. Using at would describe a location (waiting at a place), not what you’re waiting for. On would imply being on top of or inside something (like on the train), which changes the meaning. To isn’t the normal choice with a noun object like the train in this context.

This tests the natural collocation with the verb wait and how to express the thing being waited for, plus how to show duration. We usually say wait for something when we’re waiting for an event or object to arrive or occur. Here, waiting for the train is the idea, and over an hour shows the length of time, so using for to express the duration is also correct. Put together, the sentence becomes natural: She's been waiting for the train for over an hour.

Using at would describe a location (waiting at a place), not what you’re waiting for. On would imply being on top of or inside something (like on the train), which changes the meaning. To isn’t the normal choice with a noun object like the train in this context.