Follow the example and do the same using JUST:

Example: he / go out – He has JUST gone out.

1 She / leave the room …………………………………………………

2 they / watch the news ……………………………………………

3 I / finish homework ………………………………………………

4 he / put on the jacket …………………………………………………

5 she / catch a fish …………………………………………………………

6 he / call a taxi ……………………………………………………………

Утвердительные He has forgotten his name. 
I have visited Moscow 3 times. 
She has studied English since childhood.
I have finished reading a book this week.
We have written a letter.  

отрицательные He hasn`t forgotten his name. 
I haven`t visited Moscow 3 times.
She hasn`t studied English since childhood.
I haven`t finished reading a book this week.
We haven`t written a letter.  

вопросительные Has he forgotten his name?
Have I visited Moscow 3 times?
Has she studied English since childhood?
Have I finished reading a book this week?
Have we written a letter?

. вопросительные-
1.Have you finished your job?
2.Have you passed your driving test?
3.Has the postman come this morning?
4.Have you done your homework?
5.Why haven’t you put on your coat?
положительные-
1.We have bought a new TV set.
2.The students have left the room.
3.The train has just arrived.
4.He has written about a hundred novels.
5.I have already bought that book.
отрицательные-
1.I have not written the letter.
2.I had not written the article.
3.I should not have written the test work.
4.She hasn't written the test yet.
5.He hasn't phoned this afternoon.