Anybody trying to be in my rap song with da baby

Idon understand these and need some ! ?

Visualizing a game of “tag” to remember the meaning of contagious

Technician a says that a new replacement part is always good. technician b says that sometimes recent repair work will be the cause of a complaint. who is correct? a. both technicians a and b b. technician a c. technician b d. neither technician a nor b