Are delighted
Was delight
Were delighted
No improvement
One of the functions by
Some of the functions
Most of the functions of
One of the functions of
should have gone to England
were going to England
go to England
had gone to England
were to have worked
being worked
was working
have been working
either of her three sister
all of her three sisters
any of her three sisters
that would ever live
that would have been ever lived
that have ever lived
that would have ever lived
have unnecessary
have been not necessary
are being unnecessary
no correction required
What should have happened
What happened
What would have happened
What happens
am not
did not had
do not have
Should shut the window
May shut the window
Will shut the window
Do shut the window
