Do the preparation task first. Then listen to the audio and do the exercises.
Jani: Welcome to the department, Yuki. Let me show you around and tell you about your new colleagues. I'll introduce you to them all later.
Yuki: Great. Thanks. So, who are those people over there?
Jani: That's the order management team. Luciana deals with the new orders. She's the one with short, dark hair.
Yuki: In the purple dress?
Jani: Yeah, that's right. You'll probably work closely with her while you are learning about our ordering process.
Yuki: Got it, thanks. And who's that over there? The guy who's on the phone?
Jani: Oh, you mean the one by the window? In the green shirt? Ah, that's Ian. He's the marketing director. And that's Maria beside him. She's responsible for the internal IT systems.
Yuki: OK, I'll try to remember all of this. I should probably be taking notes!
Jani: Don't worry about it. For now it's just good to put some faces to names.
Yuki: OK, great – and who do I talk to about setting up my mobile phone with email access? Is that also Maria?
Jani: No, you need to talk to Sebastian who works in communications. He can help you. That's him over there, next to the printer.
Yuki: Thanks. I'll introduce myself to him later.
//He's the marketing director. And that's Maria beside him.//
Can I use it’s instead of that’s as following?
He’s the marketing director. And it’s Maria besides him.
//Yuki: OK, I'll try to remember all of this.//
Is it correct l use these instead of this as following?
I’ll try to remember all of these.
Hello Ray Tam,
The choices here are contextual. As I believe I said in a previous answer, 'that' and 'this' tend to be used as ways of differentiating items: this person not that person, while 'it' is used simply to refer to a particular item. Thus, in your first example, both 'that's' and 'it's' are possible grammatically; which would be the best choice depends on the broader context. Are you pointing out Maria from a group of people or introducing her for the first time, for example?
In your second example, 'all of this' describes something singular or uncountable: this information, this advice etc. 'All of these' describes something plural: these details, these names, these rules etc.
The LearnEnglish Team
I see. Thank you very much.
Even though over twenty colleagues in our company, all of them look like very busy in working. As a member of sales department, I only have chance get in touch with acounting colleagues. Once off duty l would like to go to the bar with them. We enjoy the happy hour and nothing we can’t talk.
I've just colleagues at the university, they're nice! We work well together!