Question

3. At first Bob was puzzled by Virginia's waving,but then it        his mind that she was trying to tell him something.

   A. crossed   B. passed   C. occurred   D. opened

Answer 1

3. A句意为："起初鲍勃对弗吉尼亚的挥手致意感到迷惑，但后来他想到，她想告诉他些什么。"cross one's mind意为"想起"，是固定用法，相当于come to one's mind;occur是不及物动词，常构成句型It occurred to sb. that...意为"某人突然想到……"。