Question

39. There are many .............................. in our country of a year.                CELEBRATE

40. We celebrate our .............................. Day on September 2nd.                 DEPEND

41. You must be .............................. when you open that door.                     CARE

42. We can save .............................. resources by using solar energy.           NATURE

43. We can't clean up our ..............................rivers and seas over night.       POLLUTE

44.He is ..........active in spite of his old age.                                                     wonder

45..............is a very serious problem in many countries                                            employ

Answer 1

39, celebrations

40, independence 

41, careful

42, natural

43, polluted  

44, wonderfully

45, unemployment

Answer 2

39. celebrations

40. Independence

41. careful

42. natural

43. polluted

44. wonderfully

45. unemployed