我对这家酒店的主要不满是街上持续不断的噪音。

My main ___complaint about the hotel was the constant noise from the street.

学生们一个普遍的抱怨是教科书价格高昂。

A common ___complaint among students is the high cost of textbooks.

缺乏可靠的公共交通是许多居民的一大不满。

The lack of reliable public transportation is a major ___complaint for many residents.