29. He is a man of great experience, ____ much can be learned.

44. How long will it probably take for the 3D printer to make the canal house in Amsterdam?

40. From the last paragraph we learn that the investments by Linkup. org come from ____.

Conversation 28. 

63. 为了残疾人的利益，他们刊登了一系列的公益广告。

64. 微信已逐渐成为人们最喜欢的交流方式。

30. He had all these materials ____ in piles without proper permission.

23. The number of members in the club ____ to two hundred.

( )53. According to the author’s advice, the applicants should be aware of the differences between the varieties of British English and American English.

25. Smith is one of the brightest students who ____ from New York University.

31. I ____ to visit Elizabeth, but Mary came to see me just when I was about to leave.

48. Work out   48   to allocate the time.