题目内容
People in developed countries are supposed ________ more healthy food before than they have today.
A. to be having B. to have C. having D. to have had
答案:D
提示:
提示:
本题结合动词搭配考查非谓语动词。be supposed to do“理应当;照道理”,后面的before说明应该用不定式的完成时来表示过去的动作。本句意思是“照道理,发达国家过去应该比现在有更健康的食物”。
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