PDF chapter test TRY NOW

Fill in the gaps with the verb in brackets using the past perfect continuous.
Example:
Example: Sam gained weight because he _______  for 2 years. (overeat)
Answer: Sam gained weight because he had been overeating for 2 years.
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1. The police told us that the thief _____________ the house before he broke in. (watch)
 
2.  Scarlett came into the room panting. She __________ round the park. (jog)
 
3.  He was tired because he _______ so hard. (exercise)