It was not until I went through his paper that __________ what rapidprogress he had made in writing.
_____, the players tried their best to win the game for their class.
----Did you open the door? -----Yes. I remembered _____it before you arrived.
They were so late that they ____had time to catch the train.
----Why can’t I smoke here? ----At no time_____in the meeting room.
Helen plays the piano well, ____her favourite instrument is the violin.