Is your mother very strict ____ her work – Yes, she is strict ____ me, too.

On no account can parents always _______ with the children, otherwise they will become more greedy and come up with more unreasonable requests

In his whole life,the main aim was to his brother in business.But he failed in the end. [ ]

______ important information is now in our life!

Lao She is one of _____________ of the twentieth century.