Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...

Present continuous and 'going to' Verb patterns The present perfect with ‘ever’ and ‘never’ The present perfect with 'for' and 'since' Comparatives and superlatives The present perfect with 'just', ...

Opponents of these blocking laws have signaled plans to bring legal challenges under the Full Faith and Credit Clause of Article IV of the U.S. Constitution, which obligates states to recognize the ...

The five patterns illustrated below provide the basis for all other sentence structures: that is, other kinds of sentences are transformations of these basic patterns. Though the above sentences are ...

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Check and improve your grammar with our intermediate grammar reference guide. On this page you'll find links to our intermediate grammar summary pages. Each intermediate grammar reference page covers ...

Download the free worksheet, join the class and improve your English! Language focus question tags Examples He's always late, isn't he? She didn't get married, did she? He hasn't been to Bangkok ...

optima is a fast pattern matching library which uses optimizing techniques widely used in the functional programming world. See the following references for more details: Optimizing Pattern Matching ...

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