怎么做，答對重賞！(六年級英語閱讀題)

1.It's useful for us to know how much money we usually spend on different things.
2.Because different people need different things.
3.No, he doesn't.
4.He can save money on CDs by borrowing them from his friends.
5.Because we have to pay for some things only once a month or once a year.

46. It's useful for us to know how much money we usually spend on different things.
47. Because different people need different things.
48. No, he doesn't.
49. He can save money on CDs by borrowing them from his friends.
50. Because we have to pay for somethings only once a month or once a year.

1：how much mony we will have