You should be .You mustn't take any unnecessary risks until you are quite sure.
A. dynamic.
B. desperate
C. considerate
D. cautious
网友回答
A. dynamic.
B. desperate
C. considerate
(答案→)D. cautious
解析:考查单词意思,dynamic意思“动态的”,desperate意思“绝望的”,considerate意思“体贴的”,cautious意思“小心的”,句子意思“你应该小心的,你禁止冒任何不必要的风险直到你非常确信的”