His younger sister may already be in high school now, in ___ case this picture book is too childish for her.
We should read such books ____ will make us better and wiser.
You must show my wife the same respect ____ you show me.
He is absent ____ is often the case.
It is the first time ____ I have come to your city.
Who ____ has the same idea as it will do it in this way.