1. accessible 2. It is okay without "if", but you need "which" or "that": In the event that you need extra help, feel free to contact me directly. It is okay to say "in the event you need extra help" when speaking, but you need "which or "that" when writing. (I am a British English speaker. A US English speaker may answer differently.) 3. When you "accrue" something, you receive more of it over a long period of time. The word is used to talk about business or money. "Sick leave credits" describes time you can take off if you are unwell. We do not have this in the UK, so I cannot tell you a lot. Sorry! "per quarter" means "per quarter of a year". In other words, every 3 months. "Workers with a contract at Wendy's Incorporated receive sick leave credits. Workers receive one extra sick leave credit per quarter." 4. Yes. It is formal, and is often used in academic writing. 5/6. "Have". This verb tense is called the "present perfect continuous". It is a present tense because the children are disappointed now with how they acted in the past. The ""present perfect continuous" tense is formed like this: [has/have + been + present participle] ~~~~~~~~~~~ Is my answer clear? Would you like it explained a different way?

1) accessible 2) no. 3) People who work at (the restaurant) Wendy's earn 1 unit of sick leave every 3 months. (Sick leave is the ability to call in sick for work and not get in trouble. It's usually unpaid. "1 unit" is a predetermined number of days, but they don't tell us how many.) 4)"in that" is used to mean "to the extent that", like saying "insofar as" (here's a link for "insofar as" http://grammarist.com/words/insofar/) 5)"have been" this is a present perfect because it's not referring to a specific, completed instance.