If you had used some visual

aids, your presentation … much more interesting.

If students participate in

research work, they … their qualification.

If the chair

man had not let

speakers wander from the subject, the meeting … over much earlier.

If you worked in our students’

scientific society, you ____ to design different devices.

OK, that's... I wanted to tell you about new technologies.

If the conductor … slowly, the

galvanometer deflection would have been smaller.

Another word for subject: Today's ... is Computers in Our Life.

Another word for 'part'.