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。

1．I went to Beijing last year and fell in love __________ it.

2．You'll be able to make a living doing __________ you love.

3．Last week,she borrowed my dictionary and didn't _________ it.

4．The boy was getting out of the __________ in the bathroom at that time.

5．Lucy is very shy. She gets __________ when she speaks in front of the class.