Complete the second sentence so that it has a similar meaning to the first, using the given word. Do not change the given word. You must use between three and five words including the given word. Use the FULL form. I have no idea why my sister wants t

Complete the second sentence so that it has a similar meaning to the first, using the given word. Do not change the given word. You must use four words including the given word. Use the FULL form. I have no idea why my sister wants to buy such an expensive dress. understand I _________________________ my sister wants to buy such an expensive dress.