_____ to do the work, I should do it some other day.   
#89407
A
If were I  
B
I were 
C
Were I 
D
Was I
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Bob said he was going to join our club but he didn’t. What a shame! He ______ his mind.
#87666
A
can’t have changed
B
mustn’t have changed
C
wouldn’t have changed
D
shouldn’t have changed
 You could have seen Fang Zuming________ yesterday morning.
#86670
A
did you come
B
if you came
C
had you come
D
if you should come