英语以适当形式填空

问题描述:

英语以适当形式填空
They stood there watching the ______(set) sun.
I often hear her _____(sing )English songs in her room.

They stood there watching the _setting_(set) sun.他们站在那里看日落(正在落的日).I often hear her _singing_(sing )English songs in her room.我经常听到她在房间里唱英文歌.听到的时候是正在唱的,所以用进行...