用括号中所给词的适当形式填空。That kind of bags is ________ (use), we can use it over and over again.
The river outside the city _______ (pollute) by the factory nearby in the past few years.
Those animals are ________ (give) food three times a day.
The scientists _________ (come) up with some good ideas to solve the serious problem already.
The soldiers are _______ (try) to save more people.
根据句意及汉语提示写出单词。A ______ (鲨鱼)is a dangerous animal.
Many _______ (法律) have been made to protect endangered animals.
The sea animals are all important to the ocean's _______ (生态系统).
Tigers are at the top of the food _______ (链条) in the grassland ecosystem.
Do you know the _______ (优点) of bike riding?
根据句意及首字母提示补全单词。Throwing l_______ everywhere is a bad habit.
The f ______live a difficult life.
The earrings she wears are really u ______．
There are many a______ of running.
The fewer p _______ bags we use, the cleaner our environment will be.
根据句意及首字母提示完成单词。I think I have made a great d_________.
If it isn’t fine this weekend, our picnic will be c_________.
The story is full of b_________ and interesting characters.
He didn’t leave until the train d_________.
It is e_________ to wear sports clothes at a party.
根据汉语意思写出单词或短语。傻瓜_____________
意大利面条________________
军官；官员________________
可信任的，可相信的______________
熬夜________________
按计划发生，举行________________
化妆舞会__________________
卖光 ________________
多于，超出________________
成百上千的_________________