Show:
Past Participle
Present Perfect + postive
Present Perfect -MAKE IT NEGATIVE
Present Perfect ? MAKE A QUESTION
100
see - 
seen
100
She/be/Africa.
She's been to Africa.
100
They/make/a mistake.
They haven't made a mistake.
100
you/ever/call/for an ambulance.
Have you ever called for an ambulance?
200
have-
had
200

They/read/HOBBIT/twice THE .

They've read THE Hobbit twice.

200
I/buy/anything.
I haven't bought anything.
200
they/ever/find/any money?
Have they ever found any money
300
go - 
gone
300
He/see/an angel.
He's seen an angel.
300
He/cut/his hair.
He hasn't cut his hair.
300
how long/he/be/a teacher?
How long has he been a teacher?
400
buy - 
bought
400

We/watch/the film/ MANY TIMES 

MANY TIMES/ We've watched the film.

400

Our mom/find/the keys.

Our mOm hasn't found the keys.

400
How long/they/live/here?
How long have they lived here?
500
sell  
sold
500

It/go/with/the wind.

It's gone with the wind

500
The dog/eat/the bone.
The dog hasn't eaten the bone.
500
she/be/here?
Has she been here?