It was a pity that when we hurried to the lecture hall, the lecture_________, so we heard only the end and missed most part of it.
#101993
A
was finishing
B
has just finished
C
just finished
D
had just finished
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With the development of science,more new technology      to the fields of IT.
#104546
A
has introduced
B
is being introduced
C
is introduced
D
was introduced
 Hurry up. I_____ for Korea to visit my uncle; The plane_____ at 10:00.
#101161
A
am leaving; will leave
B
leaves; is leaving
C
am leaving; leaves
D
will leave; is leaving
--Has the train arrived yet?---No, it ought to ___ twenty minutes ago.
#104029
A
arrive
B
have arrived
C
be arriving
D
be arrive