Hi besty,
Lastly, ask them to help you understand why the NIV managed a much more elegant translation with 20% less words than the NWT.
This is a very important point. The NWT is not only erroneous with in some very subtle but powerful ways (e.g. John 1:1) but is also terrible English!
The NWT is just plain difficult to read and understand and the spiritual truths which lie within the text have been tampered with.
Add to the the WT doctrines Jesus is not God, The Cross is a "torture stake", death has no sting, the Holy Spirit does not speak etc. and it is a recipe for disaster.
The Word and the Spirit are power. Neither are active at the "kingdom halls".
Matthew 7:17 (New International Version)
17 Likewise every good tree bears good fruit, but a bad tree bears bad fruit.
All the best, Stephen