________ as the “first lady of speech”，Dr, Lillian Glass is recognized as one of the world's leading experts on communication skills.
#89151
A
Knowing
B
Having known
C
Known
D
To be known
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With a lot of work ______, she weren't allowed to leave her office.
#90467
A
do
B
done .
C
to be done
D
to do
While watching television, .
#88583
A
the doorbell rang
B
the doorbell rings
C
we heard the doorbell ring
D
we heard the doorbell rings
Film has a much shorter history, especially when __________ such art forms as music and painting.
#94149
A
having compared to
B
comparing with
C
compare with
D
compared with
in the east of Asia, China is a developing country with a long history.
#94512
A
Located
B
To locate
C
Locate
D
Locating