For some time the expert __________ people of the health risks caused by passive smoking. He     says he won't stop until all the smokers around him decide to quit smoking.
#99539
A
is warned
B
is warning
C
has been warning
D
has been warned
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—When did Bob leave?—I have no idea. I ________ a shower upstairs.
#99457
A
took
B
have taken
C
was taking
D
would take
Now that she is out of a job, Lucy ______ going back to school, but she hasn’t decided yet.
#102289
A
had considered
B
is going to consider
C
has been considering
D
considered