﹣﹣﹣________ do you volunteer in Old People's Home?
﹣﹣﹣Once a week.We hope to help the old more.( )
How soon
How many
How often
How long
-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.
I wonder when they ___ for Beijing. I will go to the train station to see them off when they ___.
He go to bed until he his homework.
—I don’t know when ______ tomorrow.—I will call you as soon as he ______.