While listening to the concert, the audience is required to remain ______ and keep quiet.
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A
seated
B
to be seated
C
seating
D
to seat
推荐题目
When ________ to the market, these products were very popular.
#90769
A
introducing
B
introduced
C
introduce
D
being introduced
He left home early only______he was late as he went a wrong way.
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A
found
B
to find
C
finding
D
being found
____ from a Chinese character meaning people, the mascot “Haibao” shows the character of Chinese culture.
#95224
A
Created
B
Creating
C
To create
D
To be created
_________ in Current Biology, the finding suggests that female birds seek mates with superior singing skills.
#95584
A
To publish
B
Published
C
Having published
D
To be published
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