Question

16. Bob (look) for his shoes when I came in.

Answer 1

Bob was looking for his shoes when I came in.

Answer 2

The correct form of the verb "look" in this sentence depends on the tense you want to use. Here are some options:

• Present continuous: "Bob is looking for his shoes when I came in." This suggests that Bob was in the middle of searching for his shoes when you arrived.
• Past continuous: "Bob was looking for his shoes when I came in." This suggests that Bob had already started looking for his shoes before you arrived, and was still doing so when you walked in.
• Past simple: "Bob looked for his shoes when I came in." This suggests that Bob searched for his shoes at some point before you arrived, and had possibly stopped by the time you walked in.

Note that the first two options use a continuous tense to emphasize that Bob's search was ongoing, while the third option uses a simple past tense to suggest a completed action.