1 In which sentence is a semi-colon used correctly?

Jerry is an intelligent student, therefore; he will go far in life.

Virtual learning is difficult; must stay motivated to be successful.

Chemistry is a difficult subject; however, with some hard work, you can do well in it.

My dog scratched the cornea of her eye; nonetheless, will be fine in a week.

Which sentence includes a transition that best shows the sequence or signals a shift in time? for years i put off the business of tidying them up, just as i am putting it off now. a) meanwhile, for years i put off the business of tidying them up, just as i am putting it off now. b) for years afterwards, i put off the business of tidying them up, just as i am putting it off now. c) for years simultaneously, i put off the business of tidying them up, just as i am putting it off now. d) at the same time, for years i put off the business of tidying them up, just as i am putting it off now.