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1. There's no point in trying to get Jim to lend you his car.
2. He regretted not having invited her to his birthday party.
3. It takes time and patience to master a second language.
4. After Mr. Brown had been abroad for four years, he returned home as an excellent engineer.
5. You won't have any difficulty in getting a ticket for the game.
6. Americans aren't used to driving on the left.