问题
ill in Antarctica dragged on slowly because of lack of money, equipment breakdowns, environmental_________ and severe cold.
A:concerns
B:assumption
C:occupations
D:ignorance;
B:assumption
C:occupations
D:ignorance;
正确答案是：
同类题型
The latest edition of Harry Porter has been a best-seller for 3 weeks_______[ ]
3. The students will ________ for the Christmas vacation next week.
why not swim in the river—oh, no. our teacher told us _____ here. It’s dangerous.
You will never guess ______ when she found herself ranked first in the competition.