The release of more polluting gases to our environment
:<span>shy, </span><span>reserved, </span><span>diffident, </span><span>inhibited, </span><span>retiring, </span><span>reticent, </span><span>reluctant, </span>shrinking; <span>hesitant, </span><span>timid, </span><span>apprehensive, </span><span>nervous, </span><span>wary, </span><span>demure, </span><span>coy, </span><span>blushing</span>
Answer:
A
Explanation:
Libraries are usually very quiet and you would want your classmate to study as much as possible. Being at a quiet library would also give your classmate concentration.
