A：Jeff，（71）　　？

B：Yes，Mum．I finished my homework a few minutes ago．

A：But what are you doing now？

B：（72）　　，I just want to relax myself．

A：Is that also your homework？

B：Not really．But the video is well worth watching，I suppose．

A：You do？（73）　　？

B：It's about the Belt and Road（"一带一路"）． （74）　　？

A：Yes，I have just heard something about that on the radio．Anyway，it may be a little bit hard for you to understand．

B：A little bit hard？You must be joking．In the video，the conversation between the father and the daughter explains the topic lively and clearly．

A：It does？Can I watch it with you？

B：（75）　　．I promise you'll find it amazing and interesting．