______ the students found the soldier’s idea interesting, the system was too difficult to be of practical use.
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.