Which sentence uses a semicolon correctly?

Im the following sentence, what is the complete subject . an old friend of mine is in the hospital

Introduction to making a difference: it’s our world, too!

Which of the following words in bold means “to put before something else”? a) the broken device sat unused in a box. b) jose wanted to defermaking a decision about college until the spring. c) ashok’s counsel was to go to the store tomorrow. d) i would prefer to go to a movie this weekend instead of the play.