Complete the dialogues.Use the verbs in brakets in the present perfect simple or the past.Example:I've been to Beijing,but I've never been (not/go) to Shanghai.​

Certainly! Here is a detailed and comprehensive answer to the question:

To complete the dialogues, we need to decide whether to use the present perfect simple or the past tense for the verbs in parentheses. Let's go through each dialogue step by step:

1. A: Have you ever (try) sushi?
B: Yes, I (try) it once when I was in Japan.

Explanation:
In this dialogue, we are talking about someone's past experiences. Since we are discussing an experience that happened at a specific time in the past (when B was in Japan), we should use the past tense. Hence, the correct answers are "tried" and "tried."

2. A: (you/see) the new movie yet?
B: No, I haven't (see) it. Is it good?

Explanation:
In this dialogue, we are discussing whether someone has seen a recent movie. Since it is not specified when exactly B had the chance to see the movie, we use the present perfect simple to indicate that the action has an indefinite time frame extending up until the present moment. Therefore, the correct answers are "Have you seen" and "I haven't seen."

3. A: (you/visit) Paris before?
B: Yes, I (visit) it last summer.

Explanation:
This dialogue is asking whether someone has visited Paris in the past. Since B mentions a specific time frame (last summer) when they visited Paris, we should use the past tense. Thus, the correct answers are "Have you visited" and "I visited."

4. A: (you/ever/try) bungee jumping?
B: No, I (never/try) it before. I'm too scared.

Explanation:
In this dialogue, we are discussing whether someone has tried bungee jumping before. Since B states that they have never tried it, we use the present perfect simple to indicate an action that has never occurred in the past up until the present moment. Thus, the correct answers are "Have you ever tried" and "I have never tried."

5. A: (they/finish) the project yet?
B: Yes, they (finish) it yesterday.

Explanation:
This dialogue is inquiring about the completion of a project. Since B mentions a specific time frame (yesterday) when the project was finished, we should use the past tense. Therefore, the correct answers are "Have they finished" and "They finished."

Overall, the key to choosing between the present perfect simple and the past tense lies in whether or not a specific time frame is given for the action. If a specific time frame is mentioned, use the past tense. If not, use the present perfect simple.