They are two brothers, but . . . . . . of them is hardworking. A. none B. either C. neither D. every

The correct answer is C. neither.

• None means not one. In this case, it would mean that neither brother is hardworking.
• Either means one or the other. In this case, it would mean that either brother could be hardworking, but we don’t know which one.
• Neither means not either. In this case, it would mean that neither brother is hardworking.
• Every means all of them. In this case, it would mean that both brothers are hardworking.

The sentence “They are two brothers, but neither of them is hardworking” means that both brothers are not hardworking.