3 · en
Short, simple sentences with “usefulness”, suitable for children and primary/elementary school, with common expressions and related words. You'll also find examples for middle and high school.
The usefulness of the abacus lay in its simplicity and effectiveness for performing mathematical calculations.
So, Martin, I think Mrs. Barrows' usefulness in these offices has come to an end.
On the positive side, maritime trade between East and West expanded. As crusaders experienced the feel of silk, the taste of spices and the usefulness of porcelain, the desire for these products created new markets for merchants.
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