Question

1) There is no door with which you can close them. (Add a questions tag) ​

Answer 1

There is no door with which you can close them, isn't it? -This is the answer.

About question tags:

• Question tags are words that are added at the end of a sentence to change the statement into an interrogative statement.
• They form 'yes/ no' questions.
• If the sentence is in positive, the tag must be in negative ('not' must be added).
• If the sentence is in negative (if 'not' is used) , the tag must be in positive.
• Comma must be used before the question tag.
• Question mark must be added at the end compulsorily.
• The verb (is) must be used in the sentence in its negative form (isn't).
• The tag must end with the pronoun (it) of the subject (door).
• Therefore the answer is: There is no door with which you can close them, isn't it?

Answer 2

Answer: There is no door with which you can  close them  isn't it?

Explanation: