Answer:
It's correct!
Explanation:
According to Grammarly, the sentence is correct! Have a look:
Answer:
The answer is True.
Explanation:
We use the Present Perfect Continuous tense to talk about action that started in the past and stopped recently.
What the question I don't get it
Why dont you search in google !
You'll get a proper answer
B) Infectious diseases were a great source of concern