Answer:
ii) Online teaching
iii) The entire system may collapse anytime.
iv) an unswerving teacher
i) Motivator
ii) virtual
III) time
Explanation:
1. The central theme of the passage is online teaching.
ii) Online teaching
2. The biggest disadvantage of using technology for teaching is the entire system may collapse anytime.
iii) The entire system may collapse anytime.
3. According to the author, an unswerving teacher is indispensable.
iv) an unswerving teacher
4. The role played by a teacher is a motivator
i) Motivator
5. E-learning is a virtual learning process.
ii) virtual
6. E-learning has removed time differences.
iii) time
