____, I knew nothing ____ the computer. But now I can work ____ it well.
____, I knew nothing ____ the computer. But now I can work ____ it well.
A、At first; about; on
B、At last; of; at
C、In the end; on; on
D、From then on; about; with
【正确答案】：A
【题目解析】：根据but now I can work ，推断出之前对电脑不熟，因此排除BCD。know about 了解；
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