help SOS please please please please please please!!!!!!!!!!! HELP

2 has worked

3 Has Maria lived here for a long time?

4 How long have your parents been married? (has только для ед. числа 3-го лица)

5 I haven't seen my friend...

6 Diana and Jenny have been friends...

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Present Perfect образуется при помощи вспом. глагола have/has и смыслового глагола  (это те, что в скобках) в "3-ей" форме.