英语现在分词作后置定语造句

The man talking with my mom is our maths teacher.
再问： 还有吗 ？
再答： 要几句啊？ The dog barking at the door is Tom‘s dog.
再问： 还可不可以写两句动词过去分词做后置定语的句子
再答： The post cards sent from London are really beautiful. The tasks unfinished are difficult. The homework given by the teacher are for weekends.
再问： 还可不可写两句不定式短语作后置定语的句子啊 谢谢 谢谢
再答： The exam to be held next week is quite important. Our goal to accomplish is to be top five in the whole province.
再问： 谢谢哈
再答： 不客气。