Choose from options A to E the one that MOST APPROPRIATELY COMPLETES THE SENTENCE.
Its high time we____________ discriminating against one another.
The correct answer is: D
Explanation
The phrase "It's high time" is often followed by a verb in the past tense to suggest that something should have been done earlier, or it is now overdue. Therefore, "stopped" is the correct form to use here.
So, the sentence would read:
"It's high time we stopped discriminating against one another."