marc: what plays(0) have you performed (perform) sergei: we (1) ...... already ...... (do) Treasure Island by Stevenson. Last year the 10th form (2) ..... (write) a new play.
Marc: What play (3) ......... you ............ (perform) this year?
Sergei: The Adventures of Tom Sawyer by M. Twain. We (4) ........................ (start) to prepare it in February. We (5) ............... (show) it to all the pupils of our school in May.