He finally became tired of running _____ her.

• A. After
• B. Across
• C. Toward
• D. Around

Answer: (A)

This tests collocations with the verb run and the correct way to express pursuing someone. The natural expression for chasing someone is to run after them, so the preposition after is the right choice to complete the idea of pursuing her. Also, after follows tired of with a gerund form, so running is the correct form here.

Running across her would imply meeting or colliding with her by chance, not chasing. Running toward her changes the meaning to simply moving in her direction, not the act of pursuing. Running around her suggests circling or moving around her, which doesn’t fit the idea of chasing either.