1.  It's a powerful proof to prove grades can't replace everything.

2.  But if you replace the books with a literal one, I believe they will drowse in no time.

3.  They cannot replace each other.

4.  More than one thousand years ago, the Empress Wu replaced her husband and became the governor.

5.  On one hand, women cannot replace man, as the discrepancy still exists.

6.  They have their own feathers which the other one cannot replace.

7.  Science developed and most of the physical labor can be replaced by machines and robots.

8.  Men cannot replace women to give birth to a baby or breast feed babies.

9.  However, the sources of my English learning were gradually replaced by the wants of passing cet4 and cet6, and getting high grades in other English exams.

10.  Then, after replacing it in the novel many times, you finally can express exactly what it means.