在下列各句的空白处填入一个适当的词, 使句子意思完整，语法正确。（5分）

在下列各句的空白处填入一个适当的词, 使句子意思完整，语法正确。（5分）
小题1: The best way to improve your English is to _________an English club.
小题2:Most teenagers are _________of snakes. They are dangerous animals.
小题3: The boy is old enough, he should be _________to choose his own friends.
小题4:I don’t want to let my mother _________, so I’ll study hard to get good grades.
小题5:Bob is easy to get _________ with. His classmates like to be friends with him.