99 put the verb into the correct form, present simple or past simple, active or passive. 1 lt's a big factory. five hundred people . ………………………………….(employ) there. 2 ……………………………………………(somebody i clean) this room yesterday? 3 water . (cover) most of the earth's surface. 4 how much of the earth's surface (cover) by water? 5 the park gates .. . (lock) at 6.30 p.m. every evening. 6 the letter . . .. (send) a week ago and it (arrive) yesterday. 7 the boat hit a rock and (sink) quickly. fortunately everybody .. . (rescue). 8 robert's parents . .. .. .. . (die) when he was very young. he and his sister . (bring up) by their grandparents. 9 i was born in london, but i (grow up) in canada. 10 while i was on holiday, my camera (steal) from my hotel room. 11 while i was on holiday, my camera (disappear) from my hotel room. 12 why .. .. (sue i resign) from her job? didn't she enjoy it? 13 why . (ben i fire) from his job? did he do something wrong? 14 the company is not independent. lt .. . (own) by a much larger company. 15 i saw an accident last night. somebody (call) an ambulance but nobody .. (injure), so the ambulance .. (not i need). 16 where . (these pictures i take)? in london? .. .. (you i take) them, or somebody else? 17 sometimes it's quite noisy living here, but it's not a problem for me - i . .. . (not i bother) by it.