He will never forget (meet) ______ Chairman Mao in Beijing.

A．Sorry, the number is engaged. Will you hold on
B．Yes, speaking.
C．Hello. Who are you, please
D．Hello. Thank you for calling.

A．I’d like to go with you.
B．No problem.
C．Sorry. I’m busy now. Go away.
D．Of course. Go down this street and turn left.