A man does not know the difficulty of anything_________ he does it personally.
The waste from the paper factory has poisoned all the fish to death--- _____ is left.
You _____ her in her office last Friday, she’s been out of town for two weeks.
Our success was largely _____ the good cooperation of all team members.
. In our country, it’s a practice that workers have _____ for the Spring Festival.
They are forbidden _____, for they are still middle school students.