4. He was driving very fast because he didn’t know the road was icy.
A. If he had known that the road had been icy, he wouldn’t have been driving so fast.
B. If he had known that the road was icy, he wouldn’t be driving so fast.
C. If he knew that the road was icy, he wouldn’t have driven so fast.
D. If he had known that the road was icy, he wouldn’t have been driving so fast.
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