Both are correct in proper context. There has been a lot of rain today, and there have been three accidents already this afternoon.
Neither is correct ... The correct for the present perfect continuous is: "I/we/you/they had been going," or "He/she/it has been going." The correct for the the past perfect simple is: "I/we/you/they had gone," or "He/she/it has gone."
"we've been cooperating with" is the correct one.
"Has been" is correct, because "a block" is singular.
"Have been" is correct.
The correct answer is "has been". The "A" before fee makes it a singular noun which goes with the verb "has been".
No, "should had been" is not the correct tense. It's tricky, I know, but you have to use"sould have been".
hasNeither, really. But, has is the correct context.
No - the sentence 'Had never been experience' is not a correct sentence.
"July has just been started" is not correct grammar, instead the correct grammar is "July has just started."
The correct phrase is "have been." "Have been" is used to indicate a completed action or state that started in the past and has continued up until the present moment. "Have being" is not grammatically correct in this context.
"He could not have been there" is the correct sentence. It conveys the idea that he was unable to have been at the specified place.
Both are correct. Most people use the latter.