Open the brackets and choose the correct verb form: Past Porfect or Past Perfoct Continuous. As soon as she got home, she realised she __ ( leave) her glasses at work. a. had left b. left c. had been leaving

The correct answer is a. had left.<br /><br />In this sentence, the action of leaving her glasses at work happened before another action in the past (realizing she left her glasses). The Past Perfect tense is used to indicate that one action happened before another action in the past. Therefore, the correct verb form is "had left."