We / try / to win the lottery for 10 years.
We have tried to win the lottery for 10 years.
It hasn’t been very cold.
From present perfect (+) to (?)
We have taken your umbrella
Have we taken our umbrella?
The past participle of: STUDY
From present perfect (+) to (?)
They have lost their dog.
Have they lost their dog?
The past participle of: BUY
My brother, sister, and I, / see / any good scary movies in the last year.
From present perfect (-) to (?)
You haven't bought any bread.
Have you bought any bread?
The past participle of: WRITE
WRITTEN
They haven’t paid attention.
From present perfect (-) to (?) and also correct any errors.
He has travelled a lot.
Has he traveled a lot?
The past participle of: DO
DONE
I /have/ a backache since last month.
I have had a backache since last month.
We /not / ride / a camel.
We haven´t ever ridden a camel.
teacher / teach/ any new topic?
Has the teacher taught any new topic?
The past participle of: BE