Hello,dear students.
Wh- + Have/Had + Subject + BEEN + Past Participle. Present Perfect. Why has the plane been delayed NOTE: What has been delayed Past Perfect. When had the tires been replaced NOTE: What had been replaced before you went to the auto shop
Form of to be.
Please watch this video below and make some notes and you should do the exercise in written form.
Do the test:https://www.liveworksheets.com/jl280527yt