—I drove to Zhuhai for the air show last week.—Is that ________ you had a few days off ?
Many a time ________ swimming alone.
It was not until I began to work that ______ how much time I had wasted. A did I realize B didn’t I realize C I realizeD I realized
Not until I began to work ____ realize how much time I had wasted.
So loudly _____ that ____ hear her clearly.
Only when the meeting was over___ go back to meet his friend.