—Why didn't you come to Mike’s birthday party yesterday?---Well, I ____, but I forgot it.
#90381
A
should
B
must
C
should have
D
must have
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Often, when he ______ something that ______ him, he wasted his time drawing some little pictures. 
#89280
A
should be doing; gave
B
should have been doing; was given
C
should do; was given
D
should have been doing; had given
All the doctors in the hospital insisted that he________ badly wounded and that he ______at once.
#87457
A
should be, be operated on
B
were, must be operated on
C
was, should be operated
D
was ,be operated on