【题目】People in China are becoming more and more _________ about the air pollution.

【题目】We can’t be _________ by investment projects promising to make you a millionaire overnight.

【题目】—Would you please____________ that book on the floor?

【题目】____________ the advances in technology, students can learn online at home during the epidemic period.

【题目】It is a great____________ for our country to hold the 2022 Winter Olympic.

【题目】He was busy yesterday. ____________, he would have come to my party.

【题目】If you have any questions, please do not____________ to ask your teachers.

【题目】____________ China has made advances in 5G technology, there is still a long way to go for its popularity.

【题目】I would appreciate____________ if you could help me out when I am in trouble.

【题目】At the beginning of the year 2020, students never thought they____________ such a long winter vacation.