Question

He ______finish his homework before 12 o’clock.

1. A.
   haven’t to
2. B.
   don’t have to
3. C.
   hasn’t to
4. D.
   doesn’t have to

Answer 1

D
考查固定短语。没有必要做某事，don’t have to do sth /needn’t do sth.故选D。