Intermediate — Quiz — Day 2: Past Perfect

1 When Somsak arrived, the workers ___ already left.
2 By the time I got there, they ___ (leave).
3 Which happened first: 'I arrived' or 'they had left'?
4 I hadn't ___ there before. (be)
5 Translate: 'ผมบอกให้พวกเขารอไว้แล้ว'