“My car broke down when I was leaving Detroit and I had to take the bus”. “………, we would have picked you up”.
A.Had we known        
B.If we have known
C.We had known        
D.If we did know

When I stopped talking, Sam finished my sentence for me as though he …..my mind.
A.would read        
B.had read   
C.reads
D.can read

Had you told me that this was going to happen, I…….it.
A.would have never believed        
B.don’t believe
C.hadn’t believed                
D.can’t believe

Unless you ……all of my questions, I can’t do anything to help you.
A.answered
B.answer 
C.would answer    
D.are answering

It’s a tremendous task to so I’m rather pessimistic about Roger’s chances. Even if he ___ how to begin.
A.shows
B.were shown       
C.has shown       
D.showed

I still regret I didn’t have a camera. I ___ some photographs of the bird.
A.would have taken       
B.would certainly take
C.could maybe take       
D.had better take

They should think we are a group of new tourists. Let’s look surprised as if we ___ here for the first time.
A.would be       
B.have been           
C.are
D.were

-"_____________do you visit your hometown?" — '“Once a year.”
A.How long 
B.How far
C.How often
D.How much

After you country joins the EU, competition in this field will get even stronger. Unless a miracle ___, his firm must fail.
A.would happen   
B.will happen       
C.happens
D.will have happened

___ I helped him last week, he wouldn’t be in such trouble now.
A.Had
B.Were
C. If       
D.Unless