
The answer sheet says answer is 4 . can someone please explain why is answer 4 ?
The answer sheet says answer is 4 . can someone please explain why is answer 4 ?
The tense is past continuous, which in this context is meant to show that an action continued for some time (continually).
So at the point in which the teacher noticed the students, the students were listening attentively to the presentation.
Thank you Adwin for the explanation