I'm not really sure what this is asking but
1. has NNS been
2. have invented
3. need's
4. ?
5. have
6. have
7. have
Answer: Appeal; Enlist
Explanation: Enlist is a synonym for recruit, meaning, engage (a person or their help or support), fitting your desired context. On the other hand, appeal means for a serious or urgent request, best fitting for call.
