Try to (do something)

This is a soft way to tell someone, like an employee or a coworker, what to do:

Try to have it done by the end of the week.

Try to negotiate the price down a little bit before you finalize the deal.

Speaking in this way makes you seem friendly.

get in (to work)

Talk about arriving at work with the phrase "get in":

What time do you usually get in?

I got in a little late this morning.

You can also add "to work":

What time do you usually get in to work?

nine

When you talk about the time, you don't always need to add "o'clock". You can also just say the number:

A: When's the meeting?

B: It's at three.

Adding "o'clock" when it's not necessary makes the sentence sound more formal:

The meeting is at four o'clock.

Adding "am" or "pm" to the time when they're not necessary makes it even more formal:

The meeting will begin at nine o'clock a.m. Please arrive ten to fifteen minutes early.