选择正确的答语。

(____)1. Good morning，Liu Tao.

(____)2. Goodbye, Miss Li.

(____)3. Good afternoon, Wang Bing.

(____)4. Hello, Mike.

(____)5. Hello, I'm Li Lei.

a．Hi, I'm Mike.

b. Good afternoon, Jiang Ling.

c. Good morning, Helen.

d. Goodbye, class.

e. No, I'm Sam.

f. Hello, I'm Bobby.

g. Hello, Sam.