Образуйте соответствующие формы от данных глаголов.Present Continuous (invent)Present Perfect (write)

Present continuous : is/am/are verb+ing

is(he,she,it)/am(I)/are(we,you,they) inventing

Present perfect: have/has verb+Ed or 3 form

have(I,we,you,they)/has(he,she,it) written