"Do you know ________ the school library closes, Susan?"
"Ten o'clock at night."( )
when
why
who
—Will you come to the dinner party? — I won’t come unless Jenny____.
—Peter, do you know if David _________us in the fashion show this Sunday? —I’m sure if he _________his homework, he will join us.
(2014)—Why didn’t you go to school yesterday? —______ my mother was in hospital and I had to take care of her. A. Then B. Because C. If
-When will you go back to your hometown? - _______.
—What will you do if it _______ tomorrow? —I will stay at home and watch the match on TV.