fill out (a form)

A "form" is a document with blank lines or boxes that you write information into. Forms were originally printed on paper, but now forms are common on the Internet. You can see them whenever you sign up for a new website and have to enter your name, email address, and other information.

To "fill out" a form means to write answers into the blank lines or boxes.

Here are some words that you can use after "fill out":

fill out an application

fill out paperwork

fill out a registration form

fill out a survey

(someone) is finished (doing something)

You can use the word "finished" like this:

Call me back when you're finished eating.

After you've finished filling this out, just bring it back up to the counter.

A common mistake for English learners is saying "finished to ___".

I'm not quite sure (clause)

Use "I'm not quite sure..." to politely say that you don't know something. For example:

A: Where's Doug?

B: He left a few minutes ago. I'm not quite sure when he's coming back.

I'm not quite sure what I'm going to order.

"I'm not quite sure" is followed by a question word like "who", "what", "when", "where", "why", or "how".

It's also possible to follow it with "that" and then a statement, like this:

I'm not quite sure that I'm ready to start dating again.

This kind of sentence sounds a lot more formal than the ones with question words, though.

a section (of a form)

Forms like applications, registration forms, etc. have different "sections". Each section is a group of related questions.

A job application might have one section which asks for your name and address, another section where you're supposed to describe your education background, another section for your job history, and so on.