Identify the grammatical error in the following sentence. "According to a report, U.S. tariffs on the Canadian softwood industry took a heavy toll, thousands of jobs in the forest industry were lost.
Fill in the blank with appropriate word given below. "I like James. He is quick on the.......... You only have to tell that guy how to do something once. He understands the importance of something and how it works very quickly," Jack said to his assistant