It had laid (1)/ in the closet (2)/ for a week before we found it. (3)/ No error (4)

Answer

1

Explanation

had been lying will replace had laid because - a time period has been specified in the sentence. Hence, Past Perfect Continuous Tense will be used. Look at the examples given below: We have been painting our house since last Friday, but we are still a long way from finishing. She had been living in a one-room apartment for a year before getting married. Hence, it had been lying is the right usage