（1）He was under o__________ by police.
（2）After a long s _________, he gained control of the business.
（3）Anyone can’t enter his room without his _________ (许可).
（4） They had ___________(克服) the. difficulties with his English before he went abroad.
（5） It seemed that the monkey was g_________ at me, looking very angry.
（6） She a _________ the birds quietly and watched them.
（7）The _________ (大气) is badly polluted with the rapid development of industry.
（8） She is __________ (直言) that she has hurt the feelings of all her friends..
（9） No hunting is allowed in the __________(保护区).
（10） He is __________(可能) to be stuck in the traffic.