I ______ never swum in a lake.
have
They ______ bought a new car.
have
My teacher ________ explained the present perfect.
has
My parents ______ taken a train to London.
have
The teachers _________ studied a lot.
have
His computer _______ stopped working.
has
My team _____ won the championship.
has
My friend Karla _______ never been abroad.
has
We ____________ answer the questions.
have
People ______ traveled a lot.
have