根据下面句子所给的汉语注释及句意，写出空缺处各单词的正确形式。每空只写一词。

Some teenagers have lost themselves in the computer games．This may have a bad ________(影响)on their future life．

My brother is too young to look after ________(他自己)．

When the little girl saw the big dog, she was ________(害怕的)．

Do you think ________(大象)are the largest animals on land?

Without ________(闪电)，there would be no plant life in the world．

The world is so interesting．It is full of ________(令人惊奇的)things．

The ________(high)of Millie is 135 cm．

Alan is very clever and can always answer questions ________(correct)．

Skiing is as ________(danger)as diving．

My friend Elva is crazy about music, she is very ________(music)．