--instructions--

This task doesn't have audio. Read the question below and select the correct answer.

--questions--

Which sentence uses can't in a tag question correctly?

We can fix this issue, can't they?

The subject of the main sentence is we, but the tag uses they, which is a mismatch.

She can't help us, can't she?

The main sentence is negative, so the tag should be positive: can she?.

We can finish the task today, can't we?

They can join the meeting later, can't she?

The subject of the main sentence is they, but the tag uses she, which does not match.

In tag questions, the subject and auxiliary verb in the tag must match the main sentence.