---______ did you first skate? ---Two years ago.
—________ do you spell it? —D-A-Y.
—What’s this in English? —It’s an ________.
—Excuse me, is he Jack? —No, _______ name is Mike.
—Hello, what _______ your name? —I _______ Sally Brown.
下面哪一个划线部分的元音字母u的读音与其他不同的是: