to substitute for someone temporarily
sustituir temporalmente a alguien (sustituir temporalmente a alguien)
"The assistant will sit in for the teacher today."
"El asistente sentará en por el maestro hoy." (El asistente sentará en por el maestro hoy)
to develop a close relationship through shared interests or...
to mention or direct attention to something mentioned earlie...
to progress in your career to take leadership roles
to fall or descend to a lower level
to start something quickly and effectively
to become more emotionally available or loving