Answer:
II. Put the verbs in brackets into Present Perfect:
The boys (break) the window.
Q: What
N: Boys
Your bike isn't ready yet. I (not/pump) the tyres.
I know Chris. We (meet) during my last visit.
I (not/see) Guernica. I've heard it's a very powerful painting.
Tchaikovsky (always be) my favourite painter.
How many holidays (you have) since 1999?
The cat (knock) over the vase.
Q: What
N: The cat
The car (crash) into a tree.
Q: Where
N: A tree
They (cut) the tree.
Q: What
N: The tree
She (tear) up his photo.
Q: What
N: His photo
He (eat) all the cake.
Q: What
N: The cake