Present Perfect

YET and STILL are used in NEGATIVE sentences

YET comes at  THE END of the sentence

STILL comes BEFORE haven't / hasn't

I haven't seen her new outfit yet

She still hasn't shown him her new outfit

 1) They say  they posted it  two weeks ago, but it ...... hasn't arrived.

Still

2) I haven't found a flat .......  Everything around here is so expensive.

yet 

3) I've .......... seen this film. Let's watch something else.

 already 

4) He's .......... bought a new car. I'm going to go round and have a look at it.

 just 

5) Have they finished redecorating your house.............?

 yet 

6) We can't have chips again. We've ________ had them three times this week

 already 

7)Monica says she's ________ this minute caught the train so she'll be here in half an hour.

 just 

8)Daphne ________ hasn't bought the tickets. I hope she does it soon.

 still 

9) David: Can I go online now, please?

Jane: Sorry. I ________ haven't finished using the computer

 still

10) Betty: Have you cleaned the bathroom yet?

Billy: I've _________ done it. I did it an hour ago.

 already 

I have been to the supermarket this week. (This week is not finished)

----------------- 

We use for and since to say HOW LONG.

For :  the duration of time.

She has worked in the shop for three years

Since : a moment in the past.

I've known her since 2016.

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2 

1) Cougars have almost disappeared from the Victoria area ________ humans settled here

 since 

2) Maya has been a professional singer ________ 1989.

 since 

3) I haven't been snowboarding ________ last winter.

since 

4) I haven't eaten ___ hours.

for 

5) How many years is it ___ you graduated from junior high school?

since

6) They've been married ________ thirty years.

for

7)He has been a teacher at this school ________ many years.

 for

8) It has snowed ________ five hours today.

for 

9)We have kept this computer _______ 1991, and it still works!

 since 

10) Nobody has seen Billy Buttons ______ last december

 since 

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Perfect Perfect  What has happened?

Just / already / still / yet / lately  / ever / never / up til now -7 this week

since / for

Past Simple  What happened?

last __  / This morning / ___ ago  

what / when / where

1) When.......the school?

 did you join

2) ..........in England?

 Have you ever worked 

3) That's the best speech..............

I've ever heard 

4) He's the most difficult housemate.........

 I've ever had to deal with 

5) ......to him last week

 spoke 

6) ........a contract last year and it is still valid

 We signed 

7) .......from a business trip to France

 I've just come back 

8) Prices...........in 1995 but then......in 1996

 rose______fell 

9) You.........to a word.........

 haven't listened______ I've said 

10) I can't believe that_______the news

 you haven't read

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https://www.english-4u.de/en/tenses-exercises/past-simple-perfect.htm

It Has been very dry this month, but it Rained a lot last week. (be / rain)

2. Last July, I Went to visit my relatives in Barcelona. (go)

3. I think I Have Met her once before. (meet)

4. I WaS there last year but I Haven't been there lately. (be / not be)

5. I cannot contact her because she Hasn't given me her email address. (not give)

6. I love this movie. It's the third time I Have watched it. (watch)

7. Have you read her today's paper article? (you read)

8. We Packed our suitcases yesterday evening. (pack)

9. They Have just come home from their summer vacation. (just come)

10. I think he won't be able to work because he Broke his leg last Friday. (break)

11. In 2012, they Sold their house in the country and Moved to a flat in the city. (sell / move)

12. She Has worked as a lawyer since I Met her eight years ago. (work / meet)

13. They Haven't phoned since last Monday. (not phone)

14. Did you watch the late-night show yesterday? (you watch)

15. We Arrived at the hotel at about eight and Met our friends two hours later. (arrive / meet)