Question

The next step should support and hold us without a
crack
(Choose the correct question tag)
should it ?
don't it?
shouldn't it ?​

Answer 1

shouldn't it?

Explanation:

because sentence is positive as wsll as it has should as helping verb

Answer 2

The next step should support and hold us without a  crack, shouldn't it?

Step by step explanation:

• When a statement is positive, the tag should be negative.
• When a statement is negative, the tag should be positive.
• The auxiliary/modal verb of the statement is used to determines the tense of the tag.

• In the given statement, the modal auxiliary verb is should (written in past tense) and it is positive. so, while writing the sentence the tag will be negative  that is 'shouldn't' (also be written in past tense)