(用所给动词的适当形式填空) A lot of water __________ (waste) every year．It's a serious problem.

(用所给单词的适当形式填空) In the __________ (begin)，he told us a story about the life of the poor．

(用所给单词的适当形式填空) He wasn't a __________ (successful) as a teacher．

(用所给单词的适当形式填空) I'm sorry to keep you __________ (wait) so long．

(用所给单词的适当形式填空) Please remember __________ (post) the letter on your way home．

(用所给单词的适当形式填空) She has a __________ (speak) about the Charity Show tomorrow．

(根据句意和汉语写出单词) The _________ (观众) were excited on the opening night of the play．

(根据句意和汉语写出单词) I'm one of your greatest ________ (迷)．

(根据句意和汉语写出单词) What kind of ________ (材料) is the bridge made of?

(根据句意和汉语写出单词) The ________ (组织者) of the event is a woman．