单选题
1.She has caught cold，because she completely forgot ______ the windows last night.
A.locking
B.being locked
C.to lock
D.to have locked
正确答案：C
答案解析：译文：她感冒了，因为昨晚她完全忘记关窗户了。此题考查动词forget的用法。forget to do sth意为“忘记去做某事（没有做）”；forget doing sth意为“忘记已经做过的事”。