—You ought to have made an apology to Tom yesterday evening.—Yes, I know I __       __.
#87727
A
ought to have
B
have to
C
should
D
must have
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If they       what I was saying, they'd know what I was talking about
#86853
A
took the trouble to listen to
B
had trouble listening to
C
take the trouble to listen to
D
have trouble listening to