The air cylinder bottles in the survival craft should be refilled with（）.
The fire of burning plastics is classified as （） fire.
If plastic film insulation becomes damaged in air conditioning system, （） may form within the film.
（）mineral water is there in the bottle?
----The baby is hungry. ----But there's（）milk in the bottle.
Before starting the engine the air bottle should be （）.
The nervous system has plasticity and changes in response to stimuli.
What historical information does the second paragraph give about plastics?
The two speakers are going to order a bottle of red wine.
When the 3rd bottle is the different wine, new glasses for everybody have to be provided.
Some of the plastic bags can’t ____ after June 1.
____, follow the directions on the bottle carefully.
Which of the following is necessary to create any type of plastics?
The students are advised to carry their library books in plastic bags in weather（）
When he crashed the car,______six bottles of beer.
You’d better think about the environmental effect of the shopping_____ you use the plastic bags.
The bird put some ______ into the bottle.
I______the bottle to pieces against the rock.
‘How much water is left in the bottle？’ ‘______’
The baby is hungry, but there's ________ milk in the bottle.
Plastics are the best insulator of electricity, rubber______it closely.
When the bird saw a bottle, he ______ in the bottle.
There isn't ______ water in the bottle.
There’s hardly___ milk in the bottle, _____there？
