【简答题】Columbus ______________ America in 1492. (bleed, in sympathy with, think of, comfortable, operate, used to, discover, the moment, device, look forward to )
【简答题】根据提示填空 1. Mark Twain is one of the most famous American ___________(novel). 2. Columbus was a great _____________(adventure) 3. It would be _____________(believe) that such an honest boy should have c...