Please help me check this mistake correction exercise

[linhtho0211]

Please help me check if I have done the following exercise correctly:

Underline any errors and correct them. Put a tick if the sentence is error-free:

1. Aromatherapy uses many of essential oils from plants. --> error-free
2. Conventional methods have proved as ineffective and they are now experimenting with a radically different treatment. --> omit as
3. I couldn't whip up any enthusiasm for going out on such a cold night. --> error-free
4. One vitamin pill a day is the equivalent for drinking tow liters of orange juice. --> of
5. Coffee is stimulus and should not be drunk late at night. --> a stimulant
6. Their singing was excruciating and most people left the room. --> most of the people
7. If you're feeling nervous during an interview, try to improve your posture. --> improving
8. Respiratory unorders such as asthma can be made worse by living near busy roads. --> disorders
9. It's well-known that smoking can be harmful to unborn babies. --> error-free
10. Their exaggerated claims are based on a complete fallacy. --> error-free

Thank you very much in advance

[svartnik]

Aromatherapy uses many of essential oils from plants.
If you're feeling nervous during an interview, try to improve your posture.
If you're feeling nervous during an interview, try improving your posture.

tow liters is two liters

[bhaisahab]

tow liters is two liters


Or even 'litres'.

[svartnik]

tow liters is two liters


Or even 'litres'.

Cambridge Dictionaries Online - Cambridge University Press

[linhtho0211]

Anyway, thank you all. "tow" is just my typo :D

[bhaisahab]

Cambridge Dictionaries Online - Cambridge University Press

Yes I know it's the US spelling, but not everyone is in the US.