Complete the ghost hunter's spooky diary entry by choosing the correct verb form for each gap.

While staying at the old mansion, I distinctly heard someone walking up the wooden stairs, step by heavy step. A moment later, I felt a freezing cold breeze brush past my shoulder and slam the bedroom door.

While staying at the old mansion, I distinctly heard someone walking up the wooden stairs, step by heavy step.

We use the -ing form after verbs of perception (like hear) when we perceive an action in progress. The phrase "step by heavy step" highlights that the action was ongoing.

A moment later, I felt a freezing cold breeze brush past my shoulder and slam the bedroom door.

We use the bare infinitive (without "to") after verbs of perception (like feel) for a sudden, completed action. You can also tell "brush" is correct because it shares a structure with the bare infinitive "slam" later in the sentence!