Question

PRESENT PERFECT

i_____(work) very hard since christmas
There___(be) Many serious traffic accidents this year
Twenty minutes ago julien____(finish) his homework

Answer 1

Respuesta:

I have worked very hard since christmas

There has been many serious traffic accidents this year

Twenty minutes ago Julien has finished his work

Explicación:

estructura en frases positivas:

Subject+Has/Have+Verb in past participle+Complement

She

He                      = Has

It

I

You                    =Have

We

Answer 2

Respuesta:I have worked very hard since christmas

There have been many serious traffic accidents this year

Twenty minutes ago Julien has finished his homework

Explicación: Solo deberás de agregar "have" o "has", have es para I,you,we,they y has es para he,she,it; posteriormente se le agrega el verbo en pasado participio y el complemento