I have to edit these. Add any words needed for grammatical or logical completeness
1. Very few black doctors were allowed to serve in the Civil War, and their qualifications had to be higher than white doctors.
2. Producers of violent video games are not capable or interested in regulating themselves.
3. Vassily likes mathematics more than his teacher.
4. The inspection team saw many historic buildings had been damaged by the earthquake.
5. American English has borrowed more words from Spanish than from any language.
3. Does Vasilly like mathemetatics more than his teacher likes mathematics? Or Does Vasilly like mathematics more than he likes his teacher?
The others look correct.
But check back again. Another teacher may find other errors.
1. Very few black doctors were allowed to serve in the Civil War, and their qualifications had to be higher than white doctors.
http://grammar.ccc.commnet.edu/grammar/parallelism.htm Look at the last example of faulty parallelism on this webpage. What two things are being compared? Are they stated in parallel form? How will you correct it?
2. Producers of violent video games are not capable or interested in regulating themselves.
On the linked webpage above, look at the second example in the chart under Correlative expressions. So ... how will you fix this one?
3. Vassily likes mathematics more than his teacher.
See #1.
4. The inspection team saw many historic buildings had been damaged by the earthquake.
Did the inspection team see many historic buildings? There's a word missing to introduce the subordinate clause. How will you fix this? Read it aloud.
5. American English has borrowed more words from Spanish than from any language.
Read this and let us know what you think -- http://grammar.ccc.commnet.edu/grammar/parallelism.htm
How will you fix this one?
To edit these sentences for grammatical or logical completeness, you can make the following additions:
1. Very few black doctors were allowed to serve in the Civil War, and their qualifications had to be higher than those of white doctors.
2. Producers of violent video games are not capable or interested in regulating themselves, which is why external regulation is necessary.
3. Vassily likes mathematics more than he likes his teacher.
4. The inspection team saw that many historic buildings had been damaged by the earthquake.
5. American English has borrowed more words from Spanish than from any other language.