Question

Add question tag to confirm the statement –
You’re looking for your keys. Perhaps Robin has seen them. Ask him.
Robin, you haven’t seen my keys, ______?
a) Haven’t you
b) Don’t you
c) Have you
d) Did you

Answer 1

Hint: A question tag is a grammatical structure in which a declarative or imperative statement is turned into a question by the addition of an interactive fragment.

Complete answer:
We add a question tag to a statement to make it an interrogative statement. For example, You’re John, aren’t you? The statement ‘You’re John' is turned into a question by the addition of an interrogative fragment (the tag), and turned into a question. The tag is ‘aren’t you?’
Now, let us examine all the given options to find out the correct answer :
Option ‘a’ is Haven’t you. It means ‘you have not'. This is a negative question tag. It cannot be used here.
Option ‘b’ is Don’t you. It means, ‘do you not'. This is an incorrect option as it won’t fit in the given blank. It is also a negative question tag.
Option ‘c’ is Have you. It is a positive question tag and can fit in the given sentence perfectly. The sentence would be grammatically correct if we use this in the given blank.
Option ‘d’ is Did you. It is the past tense of ‘do’. It won’t fit in the given blank. It is an incorrect option.
As we have analyzed all the given options, we can easily figure out the correct option. Here, the question tag to be used in the given sentence is – Have you? The complete sentence would be – Robin, you haven’t seen my keys, have you?

Note:
 The one rule for question tags is that when the statement is positive, the tag will be negative, whereas when the statement is negative, the question tag would be positive.