12.The People's Republic of China (PRC), founded on October 1, 1949, covers an area of 9.6 million square kilometers.

48.Eggs, though rich in nourishments, have ______ of fat.

47.You______to the meeting this afternoon if you have something important to do.

46.John succeeded _______ what he wanted.

45.- What's the problem with your bike?
-

44.- It's rather cold in here. Do you mind if I close the window?
-

43.- How's your family?
-

42.- Let's go to the library this afternoon.
- _________

41.- Excuse me, when will the 17:15 train arrive? - _________

40.I didn’t expect you to turn _____ at the meeting yesterday.

39.When Lily came home at 5 p.m. yesterday, her mother _____dinner in the kitchen.