Universities have historically offered a wide variety of continuing education classes, some of ______ are now offered over the Internet as well as in traditional classrooms.

The choices are:

  1. classes, some of them that are
  2. classes. some of which are
  3. class, some of which are

The answer is (3) can you tell me why?

  • Is this from a workbook or a homework assignment? All of them look awkward at best, including #3.
    – stangdon
    Jul 28, 2021 at 14:04
  • 3
    Also, did you copy #3 correctly? Shouldn’t it be “classes” instead of “class”.
    – ColleenV
    Jul 28, 2021 at 14:13
  • If it's all one sentence, it's classes, some of which are. If it's two sentences, classes. Some of them are. Jul 28, 2021 at 16:50


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