4. Perseverance (毅力) is a kind of quality and that’s ________ it takes to do anything well.

7. —I called your office at about ten this morning, but there was no reply.—Oh, that was probably ________ I was paying a visit to a friend in hospital.

下列属于非正式意义上的法的渊源的是（ ）。

39.

52. What is special about China’s cloning monkey?

下列选项中属于选聘班主任需要考查的条件的是（ ）。

14. He ran away from home and went to Paris with the ________ of becoming a famous painter.

25. It’s said that dogs will keep you ________ for as long as you want when you are feeling lonely.

42. Which of the following best suits document processing?

20. The shop owner will get all these goods ordered ________ to the customers today.

31.

27. The book is of great help to ________ wants to do the job.