The latter one is the correct sentence by structure. The correct one is, he contributed in organizing the program.
That is the correct spelling of the word "organizing" (arranging).
No. The word values, should be singular. A grammatically correct version is, "Your organization is composed of members who value leadership and creativity."
The US English spelling is "organizing". The British English spelling is "organising".
Either way of organizing is correct, so long as you then proceed to the other end to explain the topic sentence.
That is the correct spelling of the word "contributed" (gave, or aided).
"How are you" is a correct sentence.
Neither. The correct statement would be "Drama Club members are organizing a car wash." The you/us is implied; to include either would be redundant.
Yes, this sentence is correct.
That is the correct spelling of "choreography" (organizing a dance routine).
You are palpitating. This is a correct sentence.
no it is not a correct sentence.
That sentence is grammatically correct.