—Has Tom finished his task yet?—I’m not sure. But he _____ on it last week
#100481
A
was working
B
has been working
C
worked
D
had been working
推荐题目
“If I ________ taking drugs, I would be a successful businessman now,” said the dying drug addict. 
#102799
A
didn’t start
B
haven’t started
C
hadn’t started
D
shouldn’t start
 US president George Bush ____ the war in Iraq on March 20,2003. But internationally, the US war in Iraq _____ as one country misusing its power over a weaker nation.
#104282
A
started, has been criticized
B
has started, had been criticized
C
started, has criticized
D
had started, was criticized
—Excuse me, but could you please turn the radio down?—Sorry, I       you could hear it.
#102834
A
don’t realize
B
haven’t realized
C
didn’t realize
D
hadn’t realized
--- Who are you e-mailing?--- My cousin who ________ to Fudan University the year before last year.
#104625
A
had been admitted
B
is admitting
C
has admitted
D
was admitted