It's a pity that theconcert has been cancelled.是被动语态吗?平常现在完成时什么情况下会加入been ,什么情况下加入 have been 而不是被动语态

It's a pity that know you. It's a pity that you are that's a pity Pity that it’s not It's a pity that you ______ (miss) the wonderful performance. it's a pity that she _ the game.填什么,为什么填这个 it's a pity that you didn't watch the e____ of the movie it's moving a pity it's Sunday. It's a pity that I can't recall her name for the time being.请问for the time . I DON'T WANT TO BE THE DULL THAT YOU THINK IT'S A PITY TO THROW AWAY!是什么如题I DON'T WANT TO BE THE DULL THAT YOU THINK IT'S A PITY TO THROW AWAY! It's ____that China hasn't used the Maglev Train_____.A.a pity;widelyB.pity;widelyC.a pity ;wideD.pity;wide it's a pity 可以省略成pity that.那是不是类似的短语,比如it's an honor that 也可以省略成honor that ________ we can't join in the party．A.It is a pity B.That is a pity C.It is a pity that D.It is pity what do you think of the film AVATAR?It's fantastic.The only pity is that( ) but it is a pity that...yisi what do you think of the film AVATAR?It's fantastic.The only pity is that I( ) begining of it.a,missed;b,miss The girl stopped _____(climb)up the hill.She was so tired.It's a pity that they failed _____(pass)the exam it's a pity 什么意思