31.  Four people are planning a bicycle trip from Beijing to London.

32.  Four people are come from China, Australia, Greece, Britain .

33.  They are trying t collect money for a wild life project.The necklace Ten years ago, Pierre, Mathilde's husband was working in a government office.

34.  At home, most of housework are worked by women.

35.  Now, we are talking about today's home work of methematics .

36.  Its roof is being mended and its wall and its walls are being painted.

37.  Some people are watering the lowers and some more trees are being planted.

38.  On the bank of the lake, some boats are being repared .

39.  Flowers and trees are being watered.

40.  Some more trees are being planted, some boats nearby the lake are being prepared .