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A rather simple exercise that should help students with questions starting with WHEN (typically in the past simple) and questions starting with HOW LONG (typically in the present perfect). The sentences come from Tatoeba. Key included.

when-and-how-long-questions_109080.docx

WHEN AND HOW LONG QUESTIONS

when-and-how-long-questions

A rather simple exercise that should help students with questions starting with WHEN (typically in the past simple) and questions starting with HOW LONG (typica…