not know/where/chemist's/ask/directions/hotel reception A. She doesn't know where the chemist's is because she asks for directions at the hotel reception. B. To know where the chemist's was,

She doesn't know where the chemist's is because she asks for directions at the hotel reception.

To know where the chemist's was, so she asked for directions at the hotel reception.

She didn't know where the chemist's was as she asked for directions at the hotel reception.

Not knowing where the chemist's was, she asked for directions at the hotel reception.