To the great ___ of the citizens, no one else was infected with H1N1 except the 12 confirmed cases at that time.
The graduating students are busy _______ material for their reports.
I had to shout to make myself _______ above the noise.
.He walked down the hills, _______ softly to himself.
.At this moment the bell rang _______ the end of class.
The child sat in the dentist’s chair _______.