Adjectives to describe people's personality

Harriet is a divious woman; she only wants to be friends with upper-class people and she looks down her nose at everyone else. Correct or Incorrect?

Without wishing to sound _________, I am the best salesperson in the company.

Most politicians are clearly ___________, or think the people are stupid.

Peter is a boring __________ who only cares about schoolwork.

Our office has too many swots in it. Correct or Incorrect?

The industrious student often studied all night. Correct or Incorrect?

Alfie's language offends many people, but he remains ____________.

She's a cheeky woman—she can be happy one minute and angry the next. Correct or Incorrect?

She's the only one of her sisters who is not gregarious. The others are very friendly. Correct or Incorrect?

Jake is so ___________. He's always running into things and dropping things.

Carl is so laid-back; he never buys drinks for the others. Correct or Incorrect?

Katie is a __________, but she always gets the job done in the end.

He was very naive to believe that she'd stay with him. Correct or Incorrect?

Tyler is a bold man, and always happy to help. Correct or Incorrect?

Tim's very nice, but he's dim; he doesn't get good grades at school. Correct or Incorrect?

John is always saying unpleasant things. He is __________.

It's good to feel proud of your achievements, but try not to be boastful. Correct or Incorrect?