Question

23. (they / be in London for six months) 24. (1/not/know / him for three months) 25. (He / live / here for three years) 26. (You / know / David for ten years) 27. (You / not / study / French for ten years) 28. (You / go / to Australia?) 29. (we / not / hear that song already)
present perfect simple​

Answer 1

Respuesta:

They have been...

I haven't known...

He has lived...

You have known...

You haven't studied...

Have you gone to Australia??

We haven't heard...