21.(2010,陕西卷15). If we ___ the other road, we might have arrived here in time for the meeting. A. take B. had taken C. took D. have taken
22.(2010,天津卷15).－John went to the hospital alone.
－If he _______ me about it, I would have gone with him.
A. should tell B. tells C. told D. had told
