41.  I have two questions, wish you can answer me.1.One sentence, my teacher told us to speak:" He is taller than I."

42.  Now, I have two questions ask you.

43.  We are like two lovely birds, flying in the sky.

44.  in the United States if you want to invite a friend to dinner you must tell him the place and tine one or two weeks before hand.

45.  We will have two subjects ' test in the next week.

46.  This invention of his will greatly benefit the whole world, so two government officials would come for the papers at eleven o'clock in the morning.

47.  But two thieves shut the right men in an empty house and took away their cards.

48.  And two impostors got to the professor Hunter's house at half past ten.

49.  Shortly after that, two police officers came to his house.

50.  They said that the two men were impostors, and they must try hard to catch them.