[ Grammar ]
The number of inhabitants on the planet ____ arriving at unsustainable levels as it confronts deficiency of assets like water, fuel and food.
A. is
B. are
C. have been
D. had been
Select your answer:

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Which sentence correctly rephrases: “Perhaps he will be home soon.”
A. He must be home soon.
B. He could/may/might be home soon.
C. He should be home soon.
D. He will be home soon.
