Mr Bush is on time for everything. How____ it be that he was late for the opening ceremony?.
#87653
A
can
B
should
C
may
D
must
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 I _______ have been more than six years old when the accident happened.
#89803
A
shouldn’t
B
couldn’t
C
mustn’t
D
needn’t
It was very kind of you to do the washing up, but you _______ it.
#89688
A
mustn't have done
B
wouldn't have done
C
mightn't have done
D
didn't have to do 
---Well done, Tom!---Thanks. But given more time, I ________ it better.
#87765
A
shouldn’t have done
B
could have done
C
might not do
D
could do