In this question, fill each gap with the most appropriate option from the list provided. We are all hungry; we ...... anything to eat since morning.

We are all hungry; we **haven't had** anything to eat since morning.
Explanation: The correct option to fill the gap is "haven't had". This is because the sentence is expressing a present perfect tense, which is used to talk about past actions or experiences that are connected to the present. In this case, the present perfect emphasizes that the hunger from not having anything to eat started in the past and continues until now.
The option "hadn't had" is incorrect because it is in the past perfect tense, which is used to talk about actions that happened before another past action. There is no indication of another past action in the sentence.
The option "never had" is incorrect because it implies an absolute lack of previous experience with eating anything since morning, which may not be the case for the individuals in the sentence.
The option "didn't have" is incorrect because it is in the simple past tense, which suggests a completed action in the past. It does not connect the past action of not having anything to eat to the present moment of being hungry.