9、Several people complained of "cat-like noises' at night and a businessman on a fishing trip saw

the puma up a tree.

complain of/about sth 抱怨某事

on 名词：强调动作正在进行

-- on the rise 在上升 / on the increase 在增加

-- on the watch 在观看 / on the match 在比赛中

-- on the fishing trip 在钓鱼的途中 / on holiday 在度假

10、The experts were now fully convinced that the animal was a puma, but where had it come from?

Fully(adv.充分地, 完全地)=completely=entirely

11、As no pumas had been reported missing from any zoo in the country, this one must have been in

the possession of a private collector and somehow managed to escape.

sth be in the possession of sb=sth be in sb's possession 某物归某人所有(主语是物)

-- The beautiful car is in my possession.=The beautiful car is in the possession of me. Sb be in

possession of sth 某人拥有某物(主语是人)

-- I am in possession of the beautiful car.(in possession of… 做表语)