作业帮Susan was listening to music at this time yesterday.(对划线部分提问）was listening to music(是划线部分）___ ___ Susan ___ at this time yesterday?
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Susan was listening to music at this time yesterday.(对划线部分提问）was listening to music(是划线部分）___ ___ Susan ___ at this time yesterday?
Susan was listening to music at this time yesterday.(对划线部分提问）
was listening to music(是划线部分）___ ___ Susan ___ at this time yesterday?
Susan was listening to music at this time yesterday.(对划线部分提问）was listening to music(是划线部分）___ ___ Susan ___ at this time yesterday?
What was, doing
What was doing
What was Susan doing at this time yesterday?