`1.` has been

`2.` hasn't had

`3.` hasn't played

`4.` haven't had

`5.` haven't seen

`6.` have realized

`7.` has finished

`8.` How long have you known each other ?

`9.` Have you taken many photographs ?

`10.` Has he eaten at the King Power Hotel yet ?

`11.` have lived

`12.` How many bottles have the milkman left - have left

`13.` have bought

`14.` has written

`15.` have finished

Cấu trúc :

`(+)`  S `+` have/has `+` P`2` `+` O

`(-)`  S `+` have/has `+` not + P`2`

`(?)`   Have/Has `+` S + P`2` ?