Question

His ________ that we should complete the plan before the weekend is reasonable.

1. A.
   plan
2. B.
   answer
3. C.
   problem
4. D.
   requirement

Answer 1

D
题意：他要求周末前完成计划是合理的。四个选项中只有requirement后的同位语从句或者表语从句中谓语要用" (should+) 动词原形"，表示虚拟语气。plan"计划"；answer"答案"；problem"问题"。