Question

Something terrible       have happened if Li Chang was not coming to eat in his restaurant as he always did.

1. A.
   ought to
2. B.
   must
3. C.
   should
4. D.
   will

Answer 1

B
试题分析：考查情态动词+完成式的用法：A. ought to应该B. must必须C. should应该D. will将要，句意：如果李畅不象平常一样到他的饭店吃饭，一定发生了可怕的事情。Must have done是过去一定做了。ought to/ Should have done本该做却没做,选B
考点：考查情态动词+完成式的用法
点评：情态动词无论是表达“推测和可能性”，还是表达“虚拟”这一概念，只要是对过去已经发生的事情进行描述，一律用“情态动词+have done”这一结构；对现在或将来的事情进行描述，用“情态动词+动词或系动词原形”。