Fill the gaps with the verb in brackets using the Past Perfect Continuous!
Example: Sam gained weight because he _______. (overeat)
Answer: Sam gained weight because he had been overeating.
1) Before Jim finally decided to go to Thailand, he ____________ about it for months. (think)
2) You _________ there for more than two hours when she finally arrived. (wait)
3) He was tired because he _______ so hard. (exercise)