Here's an amateur's take on it. "Were" would be used when talking about the near past. "Had been" would be used to draw attention to a longer time-span between your studying and the present.
A meteorologist spends their life studying weather, a paleontologist spends their life studying fossils.
Much the same as the difference between to and in.
Logical Thinking is studying How one should reason Critical Thinking is studying how humans actually reason
Staying government is learning American culture, the founding of the Constitution and American political. Staying Law is studying the laws that make up the law in America.
one has been on the end
had been is before and was is just there
Hi: I am form Afghanistan: my ask about the BCS/BIT which one is best for the and which subject studying in BCS and which subject studying in the BIT thing
gegree give statues
One is stocking his mind while the other is minding his stock.
economies is a person who studying knowledgeabout miser while miser is a person which he don't went his money.
Studying in the university refers to reading careful with the intention to master or remember. Reading in university refers to the act of going through the written literature in order to understand.
An observation is when a person observes something they are studying and and inference means to draw a conclusion based on an observation.HOPE THIS HELPS :)