How many times ____ to tell you?
I have
do I have
have I
I do have
I don't know ____ so unhappy.
why he always is
why is he always
whether is he always
why he's always
Do you have any idea when ____ ?
the results are published
will the results be published
will be the results published
the results will be published
How many people ____ for the party?
did you call
have you called
you called
called you
I wonder ____.
how long will this cold weather last
how long does this cold weather last
how this cold weather will last
how long this cold weather will last
Did she tell you how often ____?
do you take the vitamins
you take the vitamins
should you take the vitamins
you should take the vitamins
I'd like to know ____ for the experiment.
whether I could have use the new product
if can I use the new product
whether I can use the new product
whether can I use the new product
Could you tell me why ____?
do you leave
you are leaving
are you leave
you leave
Can I ask you how long ____ here?
you lived
have you been living
have you lived
you have been living
Why ____?
don't I call her
shouldn't I call her
I shouldn't called her
I wouldn't call her
I can’t remember ____ me that story before.
if he has told
if had he told
whether has he told
whether he had told
Do you know ____ to the conference tomorrow?
whether is she coming
does she come
if she is coming
is she coming
He asked me how long ____ married.
they had been
they been had
had we been
have been
I’m not sure ____ responsible for the mistake.
who being
who was being
who is
who is being
Could you explain ____ this machine works?
how
how it
how does
how is it