"White clothing is hard to clean." should be accepted.
Agreed came up with the same sentence, got it marked incorrect. 02-Sep-2018
Neither is "white clothes are hard to clean" :/
"white clothes are very hard to wash" was rejected but should be accepted
"White clothing is very hard to wash" should be accepted
"White clothing is hard to wash" not accepted.
The white clothes are difficult to wash. 为何不能加the
White colored clothes are difficult to wash - not accepted and reported 01-09-19
It is difficult to wash the white clothes - no?