未知题型 Although he had looked through all the reference material on the subject, he still found it hard to understand this point and her explanation only _____ to his confusion.(A) extended (C) added(B) amounted (D) turned

未知题型 This hotel _____ $ 60 for a single room with bath.(A) claims (C) prices(B) demands (D) charges

未知题型 I wish I ____ longer this morning, but I had to get up and come to class.(A) could have slept (C) might have slept(B) slept (D) have slept