As a graducate in computer science, he ___ to work out the problem.
#89044
A
wouldn't have failed
B
can't have failed
C
mustn’t have failed
D
might not have failed
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That car nearly hit me; I ________. 
#89991
A
might be killed
B
might have been killed
C
may be killed
D
may been killed
 If only I ________ driving before. 
#86751
A
learn
B
learned
C
had learned
D
would learn
Mary is ill today. If she _____, she ____ here at school
#86351
A
were not ill;would be
B
had been ill;wouldn't have been
C
were ill;should have been
D
hadn't been ill;could be
If Sanlu Group     melamine to the milk,the babies     too much from kidney stone.
#87595
A
didn’t add; would not suffered
B
hadn’t added; wouldn’t have suffered
C
hasn’t added; wouldn’t have suffered
D
hadn’t added; would have suffered