---How long has Mr. White __________ Joan?---I’m not sure. Maybe they __________ five years ago.
If she________hiking in the mountains tomorrow,I will go there with her.
She is________to go to work.
—Could I use your dictionary? —________.
—Could you please________the floor for me? —Yes,sure.
—Would you mind________in the classroom? —Sorry,I won’t do that again. A.not running B.don’t run C not to run