1．I had no choice but________the window.
A．admit breaking B．to admit breaking
C．admit to have broken D．to admit to break
解析 have no choice but to do“别无选择，只好”；admit doing sth“承认干过某事”。句意：我别无选择只得承认自己打破窗户的事。
答案 B
2． Teachers have to constantly update their knowledge in order to maintain their professional___.
A．consequence B．independence
C．competence D．intelligence
解析考查名词辨析。句意：教师必须不断地更新自己的知识来保持专业技能水平。professional competence专业技能，符合句意。consequence后果，推论；independence独立；intelligence智力，均不符合题意。
答案C
3．The patient is supposed to go to the hospital for________checks.
A．common B．normal C．regular D．usual
解析 句意：那位病人应定期到医院去做检查。regular意为“定期的；有规律的”，符合题意。
答案 C
