Formal and informal language

Is this true for formal or informal language?

-"Evidence required. Referencing is common: e.g. Research findings show that plagiarism is common in Australian universities (Williams, 2016)."

• Formal

• Informal

Which sentence is a formal language?

• How do you do?

• What's matter?

What is missing in the following to make it a formal definition?

“Crystal – is transparent or nearly so and that is either colorless or slightly tinged”

• term

• class

• differentiating characteristics

• none of the above

Thanks

• Formal

• Informal

Is this true for formal or informal language?

"People is quite vague: use nouns that refer to specific groups of people: the unemployed, the elderly, residents"

• Formal

• Informal

When typing a proper email, what type of greeting should you begin with?

• slang

• hateful

• polite

• none

Choose more formal style sentences.

• I am writing to draw your attention.

• I would appreciate if you could...

• I look forward to hearing from you.

Please find the attached invoice.

• formal

• informal

Choose the most appropriate word or phrase to complete the gaps.
I look forward to...

• meeting with you to discuss this further.
• thrashing this out with you over a pint.
• having a chat with you soon.

Woah did you see that?!

• FORMAL

• INFORMAL