单选题 How can I ever concentrate if you ______ continually ______ me with foolish questions?
[A] have ... interrupted
[B] had ... interrupted
[C] are ... interrupting
[D] were ... interrupting

【正确答案】 C
【答案解析】[名师精解] be+现在分词常与continually等词连用，表示带有感情色彩的经常发生的动作。
[解题秘籍] interrupt这个词不是表示瞬间动作的动词，可用作进行时。