1.They observed the (behave) of their new pet.
答案behaviour
2.The cherry blossoms in spring is an (attract) to the crowds of tourists in Wuhan University in Hubei Province.
答案attraction
3.Only those who have reached 18 years old are regarded as (adult) who can support themselves.
答案adults
4.There are more new research centres (focus) on AI technology in this city.
答案focused
5.China attempts to win in the battle for the next (generation) of mobile communication technology by developing and using 5G.
答案generation
