My friend, Tom, left New York in 1976 and       since then.
#103438
A
hadn’t been heard of
B
hasn’t been heard of
C
hasn’t heard of
D
hadn’t heard of
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(2014·宝鸡三检)By the time the girl comes back to life,scientists probably________a cure for this incurable disease.
#99123
A
will have discovered 
B
are discovering
C
will be discovering 
D
have discovered
The new secretary is supposed to report to the manager as soon as she _______.
#104165
A
will arrive
B
arrives
C
is going to arrive
D
is arriving
---- If he_____ , he ______ that food.              ---- Luckily he was sent to the hospital immediately.
#102860
A
was warned; would not take
B
had been warned; would not have taken
C
would be warned; had not taken
D
would have been warned; had not taken