单选题 Ms. Lopez has ______learned to create zip files.

A、 (A) yet
B、 (B) ever
C、 (C) already
D、 (D) certain

【正确答案】 C

【答案解析】Already is an adverb that indicates an action that has taken place sooner than expected. Choice (A) indicates the end of a time limit. Choice (B) means at any point in time. Choice (D) is an adjective.