Question 31: Mark the letter A, B, C or D to indicate the correct answer to each of the following questions. Question 11. Once _____________off by the teacher, the class filed out of the room in silence.

Knowledge of reduced clauses

Once + clause, clause: When, once

When two clauses have the same subject, we can omit the subject of the first clause and change the word to:

– V-ing with active sentence

– Vp2 with the passive voice

Sentences with passive meaning should be chosen C

When being scolded by the teacher, the whole class fell into silence.

Other structures to note:

to tell sb off: yell at someone