Generally, not. A working knowledge of English is required to become a U.S. Citizen. However, there are some exceptions. You may claim exempt from this requirement if, on the date of filing:
1. You have been residing in the U.S. as a lawful permanent resident
for 15 years or more, and are over 55 years of age
2. You have been residing in the U.S. as a lawful permanent resident for 20 years or more, and are over 50 years of age, or
3. You have a medically determinable physical or mental impairment, where the impairment affects your ability to learn English
If your friend met these exceptions on the date they filed for citizenship, then they can get likely have a different format of citizenship test. You must request this thought from Immigration and fill out the proper forms. These forms will be available at Immigration upon request.
Please let me know if you need further information.