学生反复查看了柯林斯on的42条用法,朗文的49条用法,感觉没有一条释义可解释以下句子或结构中on的用法。 一,An honorary degree was conferred on him. 二 ,congratulate sb on sth 三,Troops advanced on the rebel stronghold.
The largest international database has helped police find out many
crimes which at one time would have ______ unsolved.A.remainedB.maintainedC.keptD.left
TheUnited States Bureau of Labor Statistics counts 9.2 percent of workers as those who have what they term “alternative employment arrangements.”请教,句中as这里的用法是?