Answer:
1: Never are students allowed to use dictionaries in the test.
2: Never could Mary have given you any money.
3: No sooner than he came home, the problem intensified.
4: Only occasionally does Sharon talk to me these days.
5: Under no circumstances are you to talk to him about any issue.
The phrase during separate semesters helps reveal the meaning of the word concurrent which means at the same time.
Answer:
to express what the writer learned
Explanation: