We waited for the books he bought for us in day and night.A. anxiousB. anxietyC. anxiously

问题补充：

We waited for the books he bought for us in day and night.

A. anxious

B. anxiety

C. anxiously

D. worrying

答案：

A. anxious

(答案→)B. anxiety

C. anxiously

D. worrying

解析：in anxiety指处于一种焦虑的状态或者情绪；worrying 不能与in搭配，其他项不妥。