The TV programme will not be __________ (结束)until midnight.
If hunters catch a tiger,they often kill it for its __________ (毛皮)and bones.
一What’s your favourite food?
一 I like __________ (三明治)best.
If you leave litter __________ (到处),you will be unweleome.
Elephants help farmers if people __________ (训练)them.