By the time Jack returned home from England, his son  _______  from college.
#100009
A
graduated
B
has graduated
C
had been graduating
D
had graduated
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---Ring me at six tomorrow morning, will you ?---Why that early ? I _____then.
#101802
A
have slept
B
have been sleeping
C
will sleep
D
will be sleeping
I know a little bit about the city as I __________ there for one year in my youth.
#102511
A
am studying
B
had studied
C
studied
D
have studied
—I’ll come to attend your speech at 9:00 tomorrow morning. —I’m sorry. By then my speech _________ and I __________ TV at home. 
#102829
A
will end; will watch
B
is to end; will watch
C
will be ended; am going to watch
D
will have ended; will be watching