Inserisci i verbi nella loro forma corretta (present perfect o present perfect continuous) nelle seguenti frasi.
Per esempio, per il verbo "study":
‘Sue has……..hard for that exam.
Risposta: ‘Sue has been studying hard for that exam.’’
Qui è statao usato il verbo al present perfect continuous.
Verb: “See”
‘Have you ________________ that film many times?’
Verb: “Swim”
‘Have you not ________________ across the Channel before?
Verb: “Laugh”
‘Ray has ________________for 10 minutes about that joke.’