1.Miss?Brown?has?swum?in?the?pool?(for?30?minutes).?
How?long?has?Miss?Brown?swum?in?the?pool?(for?30?minutes).?
Has?Miss?Brown?already?swum?for?30?minutes?in?the?pool?
2.They?have?found?a?tortoise?(on?the?river?bank).
Where?have?they?found?a?tortoise?
Have?they?really?found?a?tortoise?on?the?river?bank?
3.We?have?visited?the?factory?(twice).
How?many?times?have?you?visited?the?factory?
Have?you?visited?the?factory?twice?already?
4.(A?famous?singer)?has?just?come?to?our?school.
Who?has?just?come?to?our?school?
Has?a?famous?singer?just?come?to?our?school?
5.I?have?bought?a?Chinese-English?Dictionary.
What?have?you?bought?
Have?you?really?bought?a?Chinese-English?Dictionary?