Hey can anyone help me in dis real quick

Translate this to spanish .sometimes a (un) teacher is mean.

Choose the correct definition for  un conocido.  a.  a comic strip      b.  an acquaintance      c.  a coincidence      d.  an avalanche 

You a) you do not need the belt. he b) mr. robinson, needs to sing in music class. you c) you need to study in science class. i d) i do not need a uniform at my school.