Conjunction - because or because of

Example
I like basket ball because I am interested in it.
I like basket ball because of my interest in it.

1. We like John _________ he is polite.
We like John ___________ his politeness.

2. We will not go swimming __________ it is raining.
We will not go swimming ___________ the rain.

3. The English lesson is boring ___________ the teacher speaks too slow.
The English lesson is boring _______________ the teacher's slow speech.

Parts of Speech: Adjective, Noun, Verb, Adverb of EASY

Examples
I like English because English is an easy subject to learn. (adjective)
I like English because of it's easiness to learn.(noun)
I can ease the study burden for my brother.(verb)
I make him feel at ease when he studies English.(noun)
I can easily help him (to) study English .(adverb)