33.Governments of different countries are working together to improve the e____ ______in the world.

32.No journey life is s_______, so you have to prepare for any difficulty.

31.Please take an _u__________ with you in case it rains.

30.The result of the experiment was s__________.

29.The scenery was beautiful beyond d_________

28.He didn’t make any c________ on the affair.

27.Our physics teacher is a h_______ _man who always makes us laugh happily.

26.Last Saturday we took a________ of the fine weather to go on a hike.

25.After liberation , what is needed most in china is a change in land o__________.

24.Thanks to a___________ development, farmers in China become richer.