【题目】John was so________that he could hardly keep his eyes________.
A．asleep; open
B．asleep; opened
C．sleepy; open
D．sleepy; opened
在线课程【答案】C
【解析】本题主要是区别sleepy与asleep在意思上的差异。前者意为“困的”；后者意为“睡着的”。从句意来分析，显然没有睡着，仅是瞌睡而已，故A、B两项可先排除；另外，keep后的宾补在这里应该用形容词open来表示。故C为正确答案。