Question

Complete as frases com WHEN ou WHILE: 1- The customer was being helped by the salesman _________________ the thief came into the store. 2- I was having lunch _______________James arrived. 3- I was studying _________ my father was reading a book.




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Answer 1

1- when
2- when
3- while

Answer 2

1- The customer was being helped by the salesman when the thief came into the store.

2- I was having lunch when James arrived.

3- I was studying while my father was reading a book.