Answer:
1. Futile
2. Huddle
3. Reluctantly
4. Mumbling
5. Irritation
Explanation:
Futile = empty and unfruitful
Huddle= To block
Reluctantly = Tiredly, Uninterestingly
Mumbling = Speaking to oneself in a low tone
Irritation= Annoyed.
Answer:
futile
huddled
exasperatedly
mumbling
irritation
Explanation: