— We did not see him at the lecture yesterday. — You _______ him, since I went to an international conference with him.
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 _______.