Answer:
Use the "I let out a sigh-" one, they both make sense but the first one is more comprehensible to other readers and its simple.
Explanation:
It is B. it is B because usally after you use an and you sometimes need to use a comma
Answer:
no everything is good
Explanation:
well done.......................
Answer:
It is because students need to learn to work on their own, as much as group work is acknowledged, individual work also needs to be acknowledged
