In fact a Ghanaian woman has on an average _________ children.

A．Ghanaian women are quite unlucky.
B．Women in Ghana are independent(独立的).
C．Women in Ghana have double tasks.
D．Most mothers in Ghana are young.

A．to care him of his sleeplessness
B．to find that his sleeplessness was not really true
C．to find out why some old people didn't need any sleep
D．to find a way to free people from the need of sleep