Question

Two days _______ enough for me to finish the work, I need _________ third day.

1. A.
   isn't; a
2. B.
   isn't; the
3. C.
   aren't; a
4. D.
   aren't; the

Answer 1

A
英语中表示“时间”、“距离”、“重量”、“钱数”等词做主语时，谓语的词要用单数；后面用“a+序数词”表示“另一个；又一个”，等于another，故选A．