Question

this is the house she bought it last week

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Answer 1

She bought a house last week

Answer 2

This is the house which she bought last week

Answer 3

This is the house she bought it last week.

→She bought a house last week.

Answer 4

This is the house she bought it last week.

→She bought a house last week.

Answer 5

This is the house which she bought last week