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Cyanide is a very dangerous ________.
A _______ is a rule for doing something using mathematical symbols.
A compound can be ___________ by a formula.
The plane was delayed __ fog.
Linda screamed with delight when she opened the _______.
Protein is found __ meat, fish and cheese.
A fern is a type of _____.
Living organisms contain many _____.
Please give ____ task your immediate attention.
It's ______ rude to swear.
____ child is getting up to mischief again.
He sailed ______ the world single-handed.
___ apple is ripe so pick it.
There is a sheer drop at the cliff ____.
Segregation is a term describing the deliberate policy of __________ groups, in the US black Americans were segregated from the white community.
An element is a substance that cannot be separated into simpler __________.
The teddy bear wore striped pyjamas.
The height __ the Eiffel Tower is 300m.
The ____ was mined for coal.