题目内容：

They can swim (改为一般疑问句）
还有一句
He often helps his mother do the housework(改为同义句）

优质解答

正确答案是：They can swim (改为一般疑问句）- Can they swim?注释：只要把情态动词“can”移到句首即可.He often helps his mother do the housework(改为同义句）He often helps his mother with the housework....