I need ________ some emails.
answering
to answer
answer
I don´t know what ________
do
I doing
to do
that I do
I don´t really mind ________ housework.
do
to do
did
doing
It´s free. You ________ pay.
don´t have to
mustn´t
haven´t to
You ________ drink so much coffee.
shouldn´t
not should
don´t should
Call me if you ________ a taxi.
didn´t find
not found
don´t find
won´t find
She forgot his birthday, but he didn´t forget ________.
she
hers
herself
her
