Quite frankly, it would be a mess. Countries with out immigration would not exist. The United States itself was made by immigrants, therefore, the US wouldn't exist. Everyone would have just stayed in either Europe, Africa, or Asia, and then it would be overpopulated.
Yes, frosting is a verb. It is the "doing" of the sentence.
verbs are words that are used to describe an action, or occurrence taking place. It forms the main part of the predicate of a sentence, such as (hear<span>, </span>become<span>, </span>happen)<span>.
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I hope this helps you and have a great day!! :)
The answer should be D they speak many languages.