By the time we __________ (arrive) at the party, everyone else had already left. - By the time we had arrived at the party, everyone else had already left., She realized she __________ (forget) her keys at home when she reached the office. - She realized she had forgotten her keys at home when she reached the office., The team was exhausted because they __________ (play) for three hours before taking a break. - The team was exhausted because they had played for three hours before taking a break.,

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