Answer:
1. to arrive - intransitive, to greet - transitive
2. to buy - transitive, to go - intransitive
3. to laugh - intransitive, to come (out) - intransitive
4. to read - transitive, to fall (asleep) - intransitive
5. to sleep - intransitive, to be - intransitive
6. to lie (down) - intransitive, to like - transitive; to sleep - intransitive verb, here used as the object of the verb <em>to like.</em>
7. to catch (up) - intransitive, to write - transitive
8. to sneeze - intransitive, to fall - intransitive
9. to sit (down) - intransitive, to wait - intransitive
10. to pass - transitive
11. to turn (off) - transitive, to go - intransitive, to sleep - intransitive
12. to move - transitive
Explanation:
Depending on whether a verb requires an object or not, it can be transitive or intransitive.
Transitive verbs are verbs that require an object - the recipient of the action expressed by the verb. For example, in the first sentence, we have the verb<em> to greet. </em>If the object was omitted, the verb wouldn't make much sense. We need the information about who is greeted.
Intransitive verbs are the opposite - they don't require an object, i.e. can't be used with it. For example, the verb<em> to arrive </em>doesn't require an object. It doesn't express an action that needs a recipient.
Some verbs can be both transitive and intransitive depending on the context.