:下列各句均有一处错误，请改正。
1.Seeing from a distance, it looked
like a human body.
2.The poison, using in a small
quantity, will prove to be a medicine.
3.Comparing with his brother, he is
not so intelligent.
4.Neither of these creatures are
easy to talk to .
5.Some of people could survive the
terrible earthquake.
6.He can pass the examination
because he keeps study hard.
7.The naughty boy constant asked the
same question.
8.His old grandpa suffered in heart
disease.
9.The first textbooks writing for
teaching English as a foreign language came out in the 16th century.
10.Don’t worry about me. I’ll be back
on my foot again.
