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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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
---  My sister is very upset today. --- It is your fault. You ________________ the bad news to her yesterday.
#86785
A
should tell
B
should have told
C
shouldn’t tell
D
shouldn’t have told