Ⅰ.用所给单词的适当形式填空
1．Finally he lost his __________ (patient) and started to yell at his mother.
2．It would be __________ (believe) that such an honest fellow should have betrayed his friends.
3．They entered the area without __________ (permit)．
4．Stop __________ (scream), we can hear you clearly.
5．I think it's time we __________ (seek) legal advice.
6．As is known, __________ (stare) at others is impolite.
7．We found the ground __________ (cover) by snow.
8．The __________ (poison) water led to the death of many fish.
答案：1.patience 2.unbelievable 3.permission 4.screaming 5.sought 6.staring 7.covered 8.poisonous
