第1题:
第2题:
A: Could I talk to Prof. Lee? B:()
AYes,speaking.
BOh, it's you
CI am the operator here.
第3题:
-Welcome to Beijing! -()
AThank you.
BOh, good.
CHow do you do?
DThat's all right.
第4题:
第5题:
Thank you for inviting me.()
AI really had a happy time.
BOh, it's too late.
CThank you for coming.
DOh, so slowly?