the first phrase is in the past tense, the second is in the present tense. Depending on the context, either can be used.
Answer:
I haven't read the book yet, but if I did it would be B
Some industrial users are required to pretreat their waste water prior to discharge to the sewer.
Summary
US: Disastrous Toll of Criminalizing Drug Use
October 12, 2016
US: Disastrous Toll of Criminalizing Drug Use
Enforcement Destroys Families, Undermines Health
Interview: Why the US Should Decriminalize Drug Use
October 12, 2016
Interview: Why the US Should Decriminalize Drug Use
Neal Scott may die in prison. A 49-year-old Black man from New Orleans, Neal had cycled in and out of prison for drug possession over a number of years. He said he was never offered treatment for his drug dependence; instead, the criminal justice system gave him time behind bars and felony convictions—most recently, five years for possessing a small amount of cocaine and a crack pipe. When Neal was arrested in May 2015, he was homeless and could not walk without pain, struggling with a rare autoimmune disease that required routine hospitalizations. Because he could not afford his $7,500 bond, Neal remained in jail for months, where he did not receive proper medication and his health declined drastically—one day he even passed out in the courtroom. Neal eventually pled guilty because he would face a minimum of 20 years in prison if he took his drug possession case to trial and lost. He told us that he cried the day he pled, because he knew he might not survive his sentence.[1
