Guessing what is in the box is very difficult.
简的粗心引起了如此大的麻烦 动词ing形式
Jane's being careless caused so much trouble.
英文 猜出箱子里有什么是很难的 用动词ing形式
Guessing what is in the box is very difficult.
简的粗心引起了如此大的麻烦 动词ing形式
Jane's being careless caused so much trouble.