context: How to take a vision test online
Search for an online vision test.
In order to find a vision test online, you will need to complete a google search. Search for " online vision test " and look through the results.
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next sentence for the context: The majority of vision tests available online are provided by companies that sell contact lenses and eye glass frames. In some cases you will be asked to create an account or provide your email address prior to taking an online vision test.

context: How to use adverbs
Use an adverb to describe a verb.
One use of an adverb is to modify a verb. The verb is the action in the sentence, and so an adverb tells when, why, to what extent, where, or how you did the action.
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next sentence for the context: You might have done the action quickly, calmly, or quietly, for instance. When using an adverb with a verb, the adverb often goes before the verb, though not always.

context: How to find a supplier to export products from china
Choose the right product (s).
This can't be emphasized enough. The general rule is if you don't know a good deal about an industry outside of china you will never be able to make sense of it, or make good business decisions when jumping into china to find suppliers.
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next sentence for the context: Don't go into china just looking to take advantage of some mythical pot of export gold. Go because you know what product you want to sell, and you know you can find the best/cheapest supply in china.

context: A man is seen pushing a large machine around a wooded area and cutting the grass along the trees. a video
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next sentence for the context:
shows how the machine works and leads into a man speaking to the camera and shots of the machine working.