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Their should be used to describe something (idea or object) that "belongs to them". These are their books. It was their idea.
A frequent error, their should not be used when describing something that belongs to a single person when the gender is unknown. His or her should be used in these situations.
By contrast, There is a place. Not here, but there. The books are over there.
They're is a contraction for the two words "They are." They're looking for their books over there.
What else can I help you with?
'when should the Bunsen burner flame be used'?
This is not a very well worded question. What do you mean by why should it be used? I Bunsen burner is used for heating things, usually in a lab setting.
Should A coverslip should always be used with wet mounts and the high-power and oil lenses?
true
Which state should a reference point be in to be used to determine motion?
The reference point should be stationary, or not moving.
What science instrument should be used to measure a rock?
a ruler
What special precautions should be used when performing the Lucas test?
Some special precautions that should be used when performing the Lucas test are to keep away from flames or other heat sources.
How should a skateboard be used?
A skateboard should be used by pushing hard on the ground.
Should cell phones be used in classes?
yes they should be used in class
Should euro be used in every country?
it should not be used in any country
Should Animals be used for clothing?
no they should not
Should pickles only be used in sandwiches?
Pickles should not be only used on sandwiches.
How should sunscreen be used?
it should be used for the care of your screen from harmful uv rays
Condition in which a particular drug should not be used-?
If a drug has expired, it is in a condition and should not be used.
How should articles be used?
the, an, a when these articles be used
Should communication be used on a netball court?
yes it should be used in all netball games
When should first aid be used?
it should be used when someone is ether sick or has an injury which is bleeding
How often should signpost be used?
Signposts should be used as often as possible where necessary.
What hitches should be used with a torque wrench?
A torque wrench should not be used on any hitch type.
