50. Australia is one of the few countries()people drive on the left of the road

38、A computer can only do _______you have instructed it to do.

37、_______fashion differs from country to country may reflect the cultural differences from one aspect.

36、Chinese is spoken by the _____number of people in the world.

35、Never get off the bus ______it has stopped.

34、At the _______ of the police, those people ran off in all directions.

33、Are you going to fix the car yourself, or are you going to have it _______?

32、His example _______ that everyone can become a useful person in society so long as he is willing to work hard.

31、This is the student _______ I know will pass the TOEFL test.

30、The news made the old lady very ______.

29、China is a wonderful place and there is _______ to see and enjoy.