70. There are _________ (thousand) of people there.

69. I’m very __________ (thank) for you help.

68. Xiao Li is busy _________ (look) for his keys everywhere.

67. The _________ (five) lesson is very easy.

66. Lin Lin is the _________ (young) in our class.

65. The ground should be _________ (挖) in winter.

64. – What are you doing there, babies? 　– Dressing _________ (自己).

63. This book is too thick. Can I ________ (借) for a week?

62. Yesterday we asked two ___________(外国人) to our English corner. We learned a lot from 　them.

61. Everyone should make a __________ (贡献)to building the Great Wall.