There are many good stories about the Long March, _________this is the most instructive.
In societies where social roles are determined, boys usually copy the behavior of their fathers, and girls usually also copy _____ of their mothers.
It was in so poor light that I couldn't _________ what the newspaper said.
In the reading room, we found her_______at the desk, with her attention______on a book.
---Time and tide wait for no man.---________. We should value our time.
The accident was ________ the driver’s careless driving rather than bad weather.