Помогите пожалуйста с граматикой по английскому языку, очень нало

1) Kids (eat) healther food at school since 2006.

1) Machines (sell) milk, water and fruit instead of chocolate at university since 2006.

3) School cooks (make) school meals better all the time.

4) Foods high insalt, fot and sugar (ban) at school all the time.

5) Smoking (know), since1954, to be the couse of dangerous diseases.

по временам Present Perfect Passive

и Present Perfect Progressive

P.S. заранее спасибо)

2

Ответы и объяснения

2013-04-26T19:12:21+00:00

1. have been eating

2. have been sold

3. have been making

4. nave been banned

5. has been known

2013-04-26T19:13:51+00:00

1)KIds have been eating ,,,,

2)Mashines have been selling

3)School cooks have been

4have been

5)Smoking have been knowing