4 a) Put the sentences of the dialogue in the correct order (1-10).
3 What are you going to do on Saturday?
OK. I've already phoned Paul and Nicole,
and they are both coming tomorrow.
That sounds interesting! What's the
project?
Nothing special. I might play football
with Paul or go to the cinema.
The members of our club are going to
build a website for "The International
Explorers' Club"
2 Oh, Christie, hi!
Great! I think lots of our classmates
would like to take part in that.
1 Hello, Andy!
Good! See you tomorrow at the club.
Would you like to take part in an
international Internet project?​

1 Hello, Andy!
2 Oh, Christie, hi!
3 What are you going to do on Saturday?
4 That sounds interesting! What's the project?
5 The members of our club are going to build a website for "The International Explorers' Club"
6 OK. I've already phoned Paul and Nicole, and they are both coming tomorrow.
7 Nothing special. I might play football with Paul or go to the cinema.
8 Great! I think lots of our classmates would like to take part in that.
9 Would you like to take part in an international Internet project?
10 Good! See you tomorrow at the club.

Explanation:

In order to solve the task, we need to rearrange the sentences of the dialogue in the correct order. The key is to analyze the context and logical flow of the conversation. Let's break it down step by step:

1) The dialogue starts with a greeting between Andy and Christie: "Hello, Andy!" - This is the first sentence.

2) Christie responds to Andy's greeting: "Oh, Christie, hi!" - This is the second sentence.

3) Andy asks Christie about her plans for Saturday: "What are you going to do on Saturday?" - This is the third sentence.

4) Christie expresses her interest in a project: "That sounds interesting! What's the project?" - This is the fourth sentence.

5) Christie explains the project: "The members of our club are going to build a website for 'The International Explorers' Club'." - This is the fifth sentence.

6) Christie informs Andy that she has already invited Paul and Nicole: "OK. I've already phoned Paul and Nicole, and they are both coming tomorrow." - This is the sixth sentence.

7) Andy shares his plans for Saturday: "Nothing special. I might play football with Paul or go to the cinema." - This is the seventh sentence.

8) Christie shows enthusiasm for the project: "Great! I think lots of our classmates would like to take part in that." - This is the eighth sentence.

9) Christie invites Andy to participate in the project: "Would you like to take part in an international Internet project?" - This is the ninth sentence.

10) Andy agrees to join the project: "Good! See you tomorrow at the club." - This is the tenth and final sentence.

By analyzing the content and logical order of the sentences, we can piece together the correct sequence of the dialogue.