The reason lies in that she works harder than the others do
不是介词后不接that从句么?
一楼说的定语从句中that代替先行词后前不能接in,应是in which.
但 动词加介词后加that-从句的用例很少,除了except,but,besides可以用之外,其他都已很少用。
二楼 好像in也不能用吧应该是except,but,besides 。
此题可改为
The reason lies in her working harder than the others do 么?