Choose A, B, C, or D for the correct answer.

The following dialog is for questions 4 to 7.

Emma: What are you looking for?

Rifat: I'm looking for my locker key.

Emma: Where did you put it this morning?

Rifat: I forgot. I usually keep it in my bag's side pocket, but it isn't there.

Emma: Well have you checked your pencil-case or inside pocket? You may have kept the
key there.

Rifat: You're right. Let me check them out.

Emma: How is it?

Rifat: I found it! It's in my pencil-case. Oh, thank God

Emma: What a relief! Let's go home then.

Rifat: Please wait, let me put my books in the locker.

Emma: O.K. I'll be waiting for you at the bicycle shed.

"It was my first performance, you know." The underlined word is best replaced with ....