单词拼写（共5分）

根据首字母及汉语提示，完成下列单词的拼写，使句意明确，语言通顺。

小题1:His words are strongly i__________(使印象深刻) on my memory.

小题2: What about reading aloud to practice p____________(发音)？

小题3:As a teacher, you must c______________(全神贯注) on your work .

小题4:The air pollution in this area caused the ________(死亡) of many trees.

小题5: He is t__________（害怕）of speaking in public.