Playing QQ’s “Happy Farm by planting, watering, fertilizing, spraying, harvestin

Playing QQ’s “Happy Farm” by planting, watering,fertilizing, spraying, harvesting and selling of virtual vegetables, fruits andflowers, we can find out _____ all the excitement is about.

A. that                    B.if                      C.what                        D.when

试题答案

【答案】

C

【解析】略