1) we've been invited (for, from, to) a wedding. 2) he often vitits his parents on a, the) sunday. 3) students often (think) that exams are a nuisance. 4) when the water (boil), turn off the gas, will you& 5) ann (not, recover) yet. she is still in hospital. 6) when they (get married)? - last year. 7) it still (rain). 8) - who told you about it? - a friend of (mine, my). 9) she is (good) secretary then has ever worked here. 10) we (arrive) ten minuts ago. 11) you (read) any of shakespeare's plays? 12) somebody (use) my computer at the moment. 13) they (ask) me some questions at the yestarday's interview. 14) she told me that you (be) ill. 15) it costs (many, much) to repair a car. 16) i know (nothing, anything) about economics. 17) as soon as i (hear) the results, i'll let you know. 18) where is stella? - she (play) tennis in the park. 19) cats (not, like) water. 20) i didn't understand whet she (mean) at first.