Условие задания:

3 Б.
Read the sentences and write only the verb forms into these sentences. Use the past perfect or the past perfect continuous.
 
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1.  We_____(watch) TV for some time before my sister went to bed.
 
   
 
2.  The managers______(search) for new clients for 2 hours before Mark came into the meeting room.
 
   
   
3.  Carol got a bad mark because he _____(make) many mistakes in her test.
 
   
 
Источники:
grammar-tei.com
www.clker.com