Underline the best answer

Giúp nhé =))
Ex1. Underline the best answers:
1. He is not (enough old to/ old enough to/ enough old for/ old enough for) get married.
2. What about (have – to have – having – had) fruits?
3. The test is too difficult for the pupils (finishing- finish – finished- to finish) in time.
4. Do you mind (close – to close – closing – closed) the door?
5. After (come – came – to come – coming) home, tom reads the morning newspaper.
6. We go to school in order (to prepare – prepared – preparing – prepare) our future.
7. The sad movie made me (cry – to cry – crying – cried).
8. We decided ( to stay – stay – staying – stayed ) at home because of the heavy rain.