问题
Just after putting the baby onto bed, MrsWhite suddenly caught sight of the pet cat and didn’t know how long it________ on the table for the family dinner
A:had been laying; lying
B:had been lying; laid
C:had been laid; laid
D:had lain; laying
B:had been lying; laid
C:had been laid; laid
D:had lain; laying
正确答案是：
