请根据句意、中文提示或英语释义写单词。
(1)Musical training can make you smarter, (尤其) when you start at a young age.
(2)Li Minhao's (到达) made the fans scream excitedly.
(3)The real purpose of study is to (make better) your abilities.
(4)The CD-ROM helps you learn English by testing your (information and understanding in the mind) of English grammar.
(5)As we know, is the second month of a year.
