根据句意，用括号中所给单词的正确形式填空，每空一词。
1．He was such a careless boy that he hurt his two _________（foot）badly just now．
2．I like listening to light music．It can make me feel _________（relax）．
3．--Have you _________（hear）from your pen friend recently?
--No，I'm looking forward to his e-mails．
4．There are many kinds of dictionaries in the bookstore．I have difficulty _________（choose）one．
5．Tom had an accident yesterday．His teacher sent him to the hospital _________（quick）．