1.Although we had been present at roughly the
same time ,Mr Brown saw the situation quite
different from the way I saw it.
2.Historically,no artists have presented
clearer or the more complete records of the
development of human culture than sculptors
have.
3.The increasing popularity of the motorcycle
as a convenience ,economical from of
transportation has been just short of
astounding.
4.A noisy aggressive cousin of the crow ,the
magpie has those bird’s thievish habits.
每题一个错，请帮忙看看

been--->刪去
have--->has
convenience-->convenient
those-->that