5. It was really annoying; I _____ get access to the data bank you had recommended.
原句意为“…我进入不了你推荐的数据库。”情态动词 can 表示“可以，能够”，符合文意，且由 was 可知，应用过去时。故正确答案为B。
“It was really annoying; I _____ get access to the data bank you had recommended.
”真让人恼火：我进不了你推荐给我的数据库。
情态动词理解模糊致错。