单项选择题
It is deemed as impolite to leave a party without saying "good-bye" to the host.（）
A. insisted B. condemned C. convinced D. considered
单项选择题 （）to some parts of South America is still difficult, because parts of the continent are still covered with thick forests.
单项选择题 The flowers in the vase （）because they had no water.
单项选择题 The artist captured the girl’s personality in his photograph.（）
