来自李延民的问题
【Asweallknowweshouldstudyhard._____________________thatweshouldstudyhard.】
Asweallknowweshouldstudyhard._____________________thatweshouldstudyhard.


【Asweallknowweshouldstudyhard._____________________thatweshouldstudyhard.】
Asweallknowweshouldstudyhard._____________________thatweshouldstudyhard.
同义词转换,应该填:Itisknown