1. --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  

2. 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

3. --Could you tell me how to do this exercise?

--Well, if you _____ to the teacher carefully yesterday, you _____ how to do it now.

A. had listened; would know             B. listened; would have know

C. would listen; know                   D. has listened; knew

4. This printer is of good quality. If it ________ break down within the first year, we would repair it at our expense.

A. would                B. should        C. could               D. might