Demo

Present Perfect

100

Justin Bieber ________ (sing) since 2010

has sung

200

Mario Vargas Llosa _______ (write) many books since 2012

has written

300

Michael Jordan _____ (play) basketball since 1984.

has played

Since / For

100

Gaston Acurio and Javier Won have cooked _____ 20 years

for

200

Martin Vizcarra has worked ____ 2019 as a Peruvian President.

since

300

Maria Reiche has studied the Nasca Lines _____  40 years.

For