Many people ......... tried but no-one has succeeded so far. did have been were have
That programme is so boring that it's like watching paint .......... dries dried dry has dried
By the end of this year I realize I ......... writing tests for three years now. shall be shall have been will be shall have
Do you mind ......... the door as I find it very hot in here? to open opened opens opening
I honestly think that the time ......... come when we should celebrate our success. has had will having
How anyone ......... to live in those conditions in the 18th century is difficult to imagine. manages will manage managed is managing
......... ever heard of this writer before? Did you Have you Do you Will you
That stupid dog ......... all day long. does always bark always is barking had always barked is always barking
They were eating dinner when the lights ......... out. go are going went goes
No-one ......... believe your story when you tell them. will did has is
