had been is before and was is just there
Much the same as the difference between to and in.
"Has been" is present perfect tense, indicating an action that started in the past and continues into the present. "Was been" is not a correct verb phrase in English.
one has been on the end
"Had been" is used to indicate the past perfect tense, showing an action that was completed before another point in the past. "Will have been" is used to talk about the future perfect tense, indicating an action that will be completed at some point in the future before another specified time.
"Have been there" refers to having visited a place previously and returned, while "have gone there" implies that you have traveled to a place and are currently still there.
The difference between the 1938, 1959 and 1952 is that it has been progressively modernized.
The difference is that "has been" is grammatically correct. "Is been" does not work because "been" refers to the past while "is" refers to the present. "Has been" works because both "has" and "been" agree in tense.
"Undisciplined" typically refers to someone lacking self-control or motivation. "Indisciplined" commonly refers to someone not following rules or procedures.
The grease
"TO" means to go to, to see. "IN" means to take part in, be part of
You have been walking is present tense and you walked is past
"could" asumes it may have, "would" asumes it was.