问题

(2016·江苏)In art criticism, you must assume the artist has a secret message ________within the work.
A:to hide
B:hidden
C:hiding
D:being hidden;
B:hidden
C:hiding
D:being hidden;
正确答案是:
同类题型
I will never forget the old days ___________ I spent with my grandmother in the village.
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.—______?——- That would be great! Please drop me off at the library