In April,2009，President Hu inspected the warships in Qingdao，________ the 60th anniversary of the founding of the PLA Navy.
#88841
A
marking
B
marked
C
having marked
D
being marked
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___ himself in carrying out an experiment, he can’t spare time to look after his children.
#95619
A
Occupied
B
Having occupied
C
Occupying
D
Having been occupied
-- They are quiet, aren’t they? --- Yes. They are accustomed __________ at meals.
#96379
A
to talk
B
to not talk
C
to talking
D
to not talking