Question

【题目】— Mabel, did you catch a cold again?
—Yes. I didn't realize the importance of doing enough exercise.
A.was afraid of
B.was unaware of
C.was worried about

Answer 1

【答案】B
【解析】句意：——Mabel，你又感冒了吗？——是的，我没有意识到做运动的重要性。didn't realize=be unaware of意为“没有意识到”，A.害怕； C.担心，故选B。