sentences:  Kawaguchi would later be accused of spying for Das, but there is no evidence for this, and a close reading of his diary makes it seem quite unlikely.Kawaguchi stayed in Darjeeling for several months living with a Tibetan family by Das' arrangement.He became fluent in the Tibetan language, which was at that time neither systematically taught to foreigners nor compiled, by talking to children and women on the street.