{
"subject": "English Language",
"grade": 6,
"url_subject": "english",
"lang": "en",
"title": "Present Perfect Practice and Communication Exercise",
"description": "English grammar exercises focusing on Present Perfect tense usage and dialogue completion",
"keywords": ["present perfect tense", "grammar exercises", "English dialogue", "verb forms", "language test", "ESL practice"]
}

Let's solve these exercises step by step:

4. Present Perfect with ever/never:

1) Have they ever eaten Mexican food?
2) Has your dad ever made a cake?
3) I have never slept in a tent.
4) Has Emma ever had a holiday in Spain?
5) I have never broken an arm.
6) Rina has never been to China.
7) Has she ever visited Madrid?

5. Present Perfect with time expressions:

1) We have not finished our homework yet.
2) It's only seven o'clock, but they have already gone to work.
3) I have just come home and I'm tired.
4) Anna has already packed her suitcase for her holiday next week.
5) I have not eaten my breakfast yet.

6. Dialogue completion:

The correct order using the phrases from the box should be:
0) "How do I" (already given in the text)
1) "first, read"
2) "what's the next"
3) "then"
4) "what do I"
5) "finally"

The completed dialogue would flow naturally, showing the steps of assembling a model plane.

Key points to remember:
- Present Perfect is used for experiences up to now (ever/never)
- Present Perfect with just/already/yet shows how recently something happened
- In the dialogue, we use sequence words to show the order of instructions