单词拼写。
1．How many parents does a ________ (克隆的) animal have?
2．Do you think it will be ________ (有益的) to humans?
3．He ________ (犹豫) before he answered because he didn't know what to say.
4．Drivers should be ________ (惩罚) severely for dangerous driving.
5．In which ________ (方向) are you going,north or south?
6．It was so cloudy that the top of the mountain was ________ (看不见的)．
7．I felt very ________ (震惊的) at the news that Germany invaded Poland this morning.
8．I am ________ (迷惑的) now.Which one will I buy?
9．We will ________ (面对) many difficulties and troubles in our daily life.
10．They dropped in for a ________ (聊天) last night.