题目内容：

根据所给的中文写出单词，使句子意思完整正确。

1.The TV programme will not be __________ (结束)until midnight．

2.If hunters catch a tiger，they often kill it for its __________ (毛皮)and bones．

3.一What’s your favourite food?

一 I like __________ (三明治)best．

4.If you leave litter __________ (到处)，you will be unweleome．

5.Elephants help farmers if people __________ (训练)them．