An idiom often cannot be understood by looking at the meaning of its separate words. ________, its meaning can be very different from the apparent meanings of its components.
--What made Kate so excited yesterday? --________ by her boss, as far as I know.
For years, it was viewed as a serious problem, ________ that has never been really solved.
--We need a man full of wisdom to take charge of the project. --________ the young man graduating from Harvard have a try?
Due to circumstances ________ our control, the performance has to be canceled.
There are some tall trees in our campus, some ________ more than forty meters.