______ to explain the lesson ______ the classroom. A. Hardly the teacher had started / when did the principal enter B. Had hardly the teacher started / the principal entered C. Hardly had
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______ to explain the lesson ______ the classroom.
Hardly the teacher had started / when did the principal enter
Had hardly the teacher started / the principal entered
Hardly had the teacher started / when the principal entered
The teacher hardly had started / when entered the principal