What are the tense and voice of the italicized verb in the following sentence? your sister had gone when we arrived
A.) past passive
B.) past active
C.) past perfect active

i guess the cause and effect would show how being around the smoke(the cause) can have negative effects on the body.

explanation:

depends on your school

when i was in high school i took ap biology my senior year and it was the hardest one for me because my teacher finished the material within the first month of school and then went on to doing advanced college level it was horrible. but at a nearby school ap biology was one of the easier aps. also, it depends on what you are interested i like math a lot so ap calculus was easier for me than most but i hate history so ap us government was harder for me than most.