Re. 13. when we (to reach) the wood, we (to find) that a party of strangers (to occupy) the spot which we (to choose) for our picnic. 14. kindly repeat what you just (to say 15. i only (to succeed) in solving tie problem after i (to work) on it for several hours. 16. he reminded me that we (to be) classmates at school. 17. my brother (to remain) in saratov till the end of the war. 18. i (to hear) that you (to give) up the idea of studying french. 19. up to now i not (to hear) anything from him. 20. he (to be) a correspondent for the times since 1981. 21. come to my room as soon as you (to return). 22. i (to know) him ever since we (to be) children. 23. i shall cash the cheque as soon as the bank (to be) open. 24. he said he (to reach) home by midnight 25. by the time he is thirty he (to become) a great pianist. 26. he (to shrug) his should (to shake) his head, but (to say) nothing. 27. dima (to go) to st. petersburg last year and (to work) there since then. 28. when i get back, they probably (to have supper). 29. he wanted to go to the far east as he never (to be) there.