You could try asking, What do. . . ?, like this,
Verb: like <transitive>
What do I like? => I like food.
Verb: swim <intransitive>
What do I swim? => I swim . . . ???
Some verbs can be both transitive and intransitive. For example,
Verb: eat <transitive>
What do I eat? => I eat pizza.
Verb: eat <intransitive>
What do I eat? => I eat . . . ?? I just eat. That's all. It's a thing I do. For example, humans eat, sleep, and work. I, too, eat, sleep, and work.
Hope that helps.
- For Teachers