语法与词汇 3.That sound doesn't ______ in his language, so it's difficult for him to pronounce it.
【正确答案】 B
【答案解析】本题的四个动词或动词短语中，除了C项have以外，都含“发生”的意思，但其中只有B项occur含有“出现”的意思，适合本句的上下文，为正确答案。