As soon as I ............... the results , I will call you .
know
will know
knows
She .................. tickets when she gets to the train station .
buys
buy
will buy
I .................. tell anybody , I promise.
won't
wasn't
am not
Scientists believe there ................ flying cars in the future .
will
will be
are
Mona will have to ................. up money to buy a new laptop.
saves
saving
save
