2 down;introduction = i---i--i-n 17acr. encourage =a---a-e 23acr. take a guess= s -r -i -e 48acr. laugh loudly = r--r (roar?) 58acr. exist unobserved= l--k (Lurk?) 62.acr. tie up = ---d 62down.difficult period -nd/----h 71.acr. smack = s---(slap?) 78acr. resolves=s-----s. 87acr. allowed= -i-e-s-d (Licensed?) Thanks folks! I am a bit stupid today. Put it down to a terrible head cold.