Basically，theseattitudesamounttoabelief________leisurecanandshouldbeputtogooduse
A、whichB
空格前面是 belief，后面是一个结构完整的句子，解释说明 belief 的具体内容。所以用 that 引导这个同位语从句。
Sincewehaveafocusedsubject，weshouldnottalk________.
Thegovernmentfinally________allthedocumentsrelatingtothewar.
It is vital that the work _______ in time.
The students are required to ________ the main ideas of the article in their own words.
________，he had no time to rest.
