Question

Образуйте форму perfect infinitive от глагола "See":
a)To have seen
b)To have see
c)To be seen
d)To have seeing

Answer 1

a)To have seen⠀ ⠀ ⠀

Answer 2

правильный ответ А, perfect infinitive это форма имеющаа вид (to) have+ past participle