—Did you find your lost key?—No, but I think _______

试题详情及答案解析

—Did you find your lost key?—No, but I think ________ must have picked it up.

A．nobody	B．somebody
C．anybody	D．everybody

答案：B

试题分析：句意：--你找到你丢失的钥匙了吗？-没有，但我认为一定有人捡起了它。Nobody没有人；somebody某人；anybody任何人；everybody每个人。所以选B。
考点：考查复合代词。