What does the expression 'sad days where the sun shone in vain' mean

Excerpt from the right decision lindsay rock telling a

Subject: save the whales! dear professor crest, i know you are really busy and everything, but i was hoping that you could spend more time thinking about how to save the whales. it’s up to us to speak up on their behalf. it’s really wrong that some amusement parks use these poor, defenseless animals for recreational purposes. this must be stopped, and you’re the person to do it! ttyl, jules which revisions would make this e-mail more formal? check all that apply. a. removing the contractions b. removing the exclamation points c. removing the salutation d. removing the slang and casual speech e. removing the information about amusement parks

Which sentence uses parallel structure? a. spring is a time for growth, renewal, and to rain. b. science provides us with some answers, some questions, and figuring out how our world works. c. as long as you use your best judgement, learn from your mistakes, and taking advice, you’ll grow as a person. d. once things are done, there is no need to dwell them, to worry about them, or to decide who to blame.