16.After driving for 20 miles, Jackson realized that he______in the wrong direction.
---I went to see my friends off at the airport. ---Is that_____you were late for the important meeting?
Mary is crazy _______ playing the piano.
It is______ these stories can amuse her.
would you please_____this form for me to see if I’ve filled it right?
----Are you cold? ----No, __________.