I was on the highway when this car went past fol. Lowed by a police car. They ______ at least 150 kilometers an hour. 
#90502
A
should have been doing
B
must have been doing
C
could have done
D
would have done
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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
This cake is very sweet. You _____ a lot of sugar in it. 
#90559
A
should put
B
could have put
C
might put
D
must have put
As it turned out to be a small house party, we __________ so formally.
#87235
A
needn’t dress up
B
shouldn’t dress up
C
were not necessary to dress up
D
needn’t have dressed up