INSTRUCTIONS: Read the text carefully and then answer the questions from 33 to 38 by choosing the correct alternative.

Brazil corruption scandals: All you need to know

For the past three years, Brazil has been gripped by a scandal which started with a state-owned oil company and grew to encapsulate people at the very top of business - and even presidents.

On the face of it, it is a straightforward corruption scandal - albeit one involving millions of dollars in kickbacks and more than 80 politicians and members of the business elite.

But as the tentacles of the investigation dubbed Operation Car Wash fanned out, other scandals emerged.

It has led to some of those who have found themselves accused claiming they are the victims of political plots, designed to bar them from office.

What is Operation Car Wash?

Operation Car Wash began in March 2014 as an investigation into allegations that Brazil's biggest construction firms overcharged state-oil company Petrobras for building contracts.

Investigators accused directors at the firm - named the world's most ethical oil and gas company in 2008 - of skimming the extra money off the top as a bribe for awarding the contract.

Which is bad enough - but then the Workers' Party found itself dragged into the corruption scandal amid allegations of having funneled some of these funds to pay off politicians and buy their votes and help with political campaigns.

Among those accused in the scandal were dozens of politicians, and Luiz Inacio Lula da Silva - the country's extremely popular former president, known affectionately as "Lula".

Read the text to answer 34, 35 and 36.

D.C. schools try to meet students where they live

Sarah Zick swerved through the crowds clogging 14th Street NW in Columbia Heights one recent muggy afternoon, trekking to one of her student’s homes. The first-grade teacher is attempting to meet the families of each of her students at their homes or a place of their choosing — shifting the traditional parent-teacher power dynamic that plays out on school grounds. On this Wednesday, three weeks into the school year, it was student No. 21. She spotted the 6-year-old girl near her public housing complex holding hands with her mother. The girl gave Zick a quick hug. The meeting began. What Zick learned: the girl loves math but is more tepid about reading. She loves dancing and princesses. A friend from school recently died of complications related to asthma, and the 6-year-old often thinks about death. Lockdowns at the school prompted by recent shootings in Columbia Heights exacerbated those anxieties.Zick’s plan after that meeting: she will send the girl home with books about dancing and princesses for mom to read with her at night. And when there is another lockdown or drill, Zick will pay extra attention to make sure the girl is okay.

Over the past five years, the District has sought to reinvent the old-fashioned idea of home visits. It’s no longer about descending on the house of a struggling or truant student. In 2011, the traditional public school system partnered with the Flamboyan Foundation which trained the teachers on how to conduct the visits, paying them $40 each family meeting. Eight years after the program launched, D.C. educators have made more relationship-building home visits than any school system in the country — even more than bigger systems, according to Gina Martinez-Keddy, executive director of Parent Teacher Home Visits, which tracks these interactions.

(Available in:https://www.washingtonpost.com/education. Adapted.)