Choose the correct time phrase and complete the sentences. Use the past simple, past continuous or past perfect form of the verb in brackets.

1 By the time / While I got to the pool, the lesson ____________ (finish).
2 Josh ____________ (plan) the training session, before / while we arrived.
3 We noticed the hole in the wall while / by the time we ____________ (clean) the bathroom.
4 While / After the trainer had spoken to her, Emma ____________ (decide) to join the gym.
5 I ____________ (work) in the lab after / when the other scientists arrived.
6 Lucas ____________ (say) very little before / by the time the match started. He wanted to concentrate.