Question

ai giải giúp e với ạ

Answer 1

76 Young people of different nationalities

77 There are ten expeditions every year

78 Each expedition lasts for ten weeks and takes 150 volunteers

79 Help scientists to do environmental research

80 It is English

Answer 2

76. Young people goes on expeditions.

77. There are ten expeditions every year.

78. Each expedition last for ten week.

79. Volunteer help scientists to do environmental research.

80. We must know speak English to become a volunteer.