Someone (steal) my laptop.
Someone has stolen my laptop.
I (buy) two printers, and a modem.
I have bought two printers, and a modem.
Karyn (write) a wonderful letter.
Karyn has written a wonderful letter.
Even (ever/you/be) to New York?
Have you ever be
Have you ever been
Have you ever been to New York ?
Has you ever been
We (visit) Central Park.
We have visited Central Park.
I (not/finish) my homework yet.
I haven't finished my homework yet.
Peter and Alise (live) in Moscow for six years.
Peter and Alise have lived in Moscow for six years.
(you/finish) your examination?
Did you have finished
Has you finished
Have you finished
Have you finished your examination?
Prince (buy) a new computer.
Prince has bought a new computer.
We (write) three essays this evening.
We have written three essays this evening.