Answer I don´t know sorry
Explanation:
Its B none of the other answers work
The correct answer is A.
MLK was a good friends with ROSA and after he heard that what happen a boycott began.
Before then he was already a paster.
Answer: Their for the first one and They're for the second one.
The main clause is "Chris's chief interest was tennis".
The subordinate clause is "Which he was just learning to play" and it is an adjective clause because it describes what the "tennis" was like. Tennis is an object and this subordinate clause further describes that it is the tennis that he was trying to learn.