We rushed to the football court, only to see a sign _____ into the ground reading PERIODIC MAINTENANCE (定期维修).
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A
knocked
B
knocking
C
to be knocked
D
being knocked
推荐题目
I ________ the pages together with a paperclip.
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A
attached
B
fixed
C
fastened
D
tied
Many approaches have been _______ to control the spread of H7N9 Bird Flu. 
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A
adapted
B
employed
C
negotiated
D
accessed
French _________ English _________ having gender(性的区别) for all nouns.
#72142
A
different from; in
B
is different; from
C
differs from; in
D
differs, from