C

    Today is a sunny day. It is August 5th. It is Judy's birthday.

    When she comes back home from school, she sees a blue card on the table. It says, "There's a present (礼物) for you, Judy. Look for it in your bedroom."

    Judy runs into her bedroom Her parents are looking at her and smiling (微笑). On the chair she sees a red box. She thinks her present must be in it. She opens it and there is a yellow card in it. It reads "dear Judy, I'm your present. My first letter (字母)is in the word 'bag' , but not in 'age' My second letter is in 'like', but not in 'mow' My third letter is in 'know', but not in 'now'. And you can find my last letter in both desk' and 'get'. What am I?"

    Judy thinks for about two minutes and says, "Aha, I know. But where is it?" Her father tells her it is in the yard (院子).

根据材料内容简要回答下列问题。