Read the following advertisement/announcement and mark the letter on your to indicate the correct option that best fits each of the numbered blanks

----- Nội dung ảnh -----
Trong ảnh có nội dung văn bản như sau:

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During the pandemic, online classes have been the greatest option for both students and educational institutions. (18) __________ that they came into their own. A convenient and fast way to learn is through an online class. In the early stages of the pandemic, its efficiency and adaptability made it more popular. The distance between places of learning is reduced. (20) __________ but also some drawbacks. The flexibility of online learning makes it possible (21) __________ all over the world, something that was previously impossible in traditional classroom settings. Better performance and output were the outcomes of letting students study in (22) __________. In education, it saved Mother Earth by cutting down on paperwork. Due to the increased accessibility of online education, many prestigious institutions have shifted their focus to online learning. One drawback is (23) __________ by becoming addicted to various forms of online gaming and social media. The key is that each person must decide for themselves whether they wish to have a successful professional life. Knowing the limits of everything is, therefore, crucial.
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Question 18:
A. Because the idea of online education
B. Despite the idea of online education
C. Although the idea of online education
D. Moreover the idea of online education

Question 19:
A. it was only during this time
B. being only during this time
C. it is only during this time
D. it only was during this time

Question 20:
A. Takes classes online has many benefits
B. Being taken classes online has many benefits
C. To take classes online has many benefits
D. Taking classes online has many benefits

Question 21:
A. interacts for students in
B. interact with students from
C. interacted to students about
D. interacting about students on

Question 22:
A. our natural environments
B. them natural environments
C. their natural environments
D. him natural environments
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