同义句 What does Li Ming do in his free time?What does Li ming do when he ___ ___?

问题描述:

同义句 What does Li Ming do in his free time?What does Li ming do when he ___ ___?

is free

is free/isn't busy (有空)

is free
in his free time 就是“在他有空的时候”
相当于 when he is free