Thomas was cheerful and (help) ____, and we soon became good friends.(201006)
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The goods that you ordered ten days ago will (deliver) ____to you tomorrow.(201006)
Gas prices are (high) ____here than in other parts of the country.(201006)
The past decade has seen great economic (develop) ____in this country.(201006)
If the engineer (come) ____here yesterday, the problem would have been solved.(201006)