Hi Duy, do you want to know what follows 'seemed'? 'seem' can be used in many ways and any good dictionary will explain its use. Perhaps the most common are (intransitive) followed by a preposition or adverb - So for example, 'It seemed ... like / as if / as though ... John was angry because he was shouting'. However, 'seem' is also a linking verb (similar in function to the verb 'be'). John is/was angry or John seems/seemed angry. I would recommend looking it up.