Advanced English Grammar Test
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Benefits of Celery
The important minerals in this magical juice effectively balance the bodys blood pH, neutralizing acidity. Its leaves and seeds contain many essential volatile oils that include terpenes, mostly limonene (75 to 80%), and the sesquiterpenes like ?selinene (10%) and humulene; however, its characteristic fragrance is due to chemical compounds known as phthalides (butylphthalid and its dihydro derivate sedanenolid) in them.
Centre and Middle - Centre
Stand in the middle of the circle.
Stand in the centre of the circle.
Standard English Grammar Test
Elementary English Grammar Test